Angles

Geometry has some very particular rules governing angles that you're going to need to know. Learn about geometry rules for angles with help from a tutor in this free video clip.

Finding the interior angle for a parallelogram requires you to follow a very specific, step-by-step process. Learn about the interior angle for a parallelogram with help from a distinguished math…

The most common methods of joining sections of baseboard molding include miter, compound miter, butt, scarf and coped joints. Of these, the miter joint is typically used to create a tight fit at both…

A camber angle is a very specific component used in the automotive industry. Find out about a camber angle with help from an expert in the automotive industry in this free video clip.

So long as you know the angle and length of an object you can find out its height using a key formula. Solve for the height when an angle and the length is known with help from a high school…

You can take the angle and distance of a building and convert that information to height in a very unique way. Get the height of a building from angle and distance with help from a high school…

Just because you're not in a classroom doesn't mean you can escape angles and mathematics. Learn about the use of math angles in our daily life with help from a high school mathematics tutor in this…

A cube typically has a fixed number of perpendicular angles. Learn about how many perpendicular angles a cube has with help from a high school mathematics tutor in this free video clip.

At some point during your mathematics career you may come into contact with a quadrantal angle. Learn about a quadrantal angle with help from a high school mathematics tutor in this free video clip.

A transversal angle is a specific type of angle that meets a few key criteria. Learn about a transversal angle with help from a high school mathematics tutor in this free video clip.

Knowing how an angle is formed will come in very handy during your mathematics career. Learn how an angle is formed with help from a high school mathematics tutor in this free video clip.

Central angles and right angles are directly related in a few specific ways. Learn whether a central angle has to be a right angle with help from a high school mathematics tutor in this free video…

If you would like to build a brick wall in your yard that turns at a 45-degree angle, then you will need to first create a 90-degree angle. Keep in mind that a square is comprised of four 90-degree…

For men, having a beard is a fashion statement — the way a man wears his beard says a lot about his personality and individual sense of style. For example, a man who lets his beard grow wild…

When making a corner or angle with stud walls, you need to maintain the structural integrity of the wall while also providing solid surfaces for exterior siding and interior drywall. Particularly on…

Calculating angles is a necessity for homeowners installing trim inside their homes. This problem has been overcome by a simple tool called an angle finder. The angle finder is based on the design of…

Geometry is the mathematical study of the properties of shapes. There are two types of geometry: plane geometry and solid geometry. Plane geometry deals with flat shapes, such as circles and…

Installing a wood-burning stove in your home creates a more efficient heat source than a fireplace. The construction of woodstoves involves specific requirements that are absent in fireplaces and…

Everyone knows leaks are bad news - the problem is that certain areas of the house make them difficult to avoid. In bathrooms, for example, a high amount of moisture is produced on a daily based,…

"Scalene" is a term that is traditionally applied to things like triangles and angles. Learn about a scalene angle with help from a mathematics educator in this free video clip.

Supplementary angles can be defined in a very specific way that is important to an equation as a whole. Define supplementary angles with help from a mathematics educator in this free video clip.

Wall angles are metal supports that attach to a room's walls and support a suspended ceiling around its border. Wall angles lay flat against the walls and protrude at perpendicular angles, providing a…

Machinists have to be precise in their work, otherwise mechanical problems or fitting problems can arise when parts are assembled. Square blocks of metal need to be inspected and tested for proper…

Skateboard risers are also known as shock pads, and they sit between the board and the wheel. They're located right in the middle of the wheel axle to stop the wheels from touching the board when you…

Microsoft Excel worksheets becomes increasingly complex as you build the document. If are using multiple data sets within one spreadsheet, make sure that titles, headings and objects stand out among…

Autodesk's AutoCAD software features a professional-grade suite of CAD (Computer Assisted Design) tools. AutoCAD can be used to construct both 2D (two-dimensional) and 3D (three-dimensional) designs,…

AutoCAD software is the industry standard in computer-aided design. AutoCAD 2011 provides a number of advanced features that are relatively easy to work with. If you are new to AutoCAD and need to…

Tweeters are stereo component parts that produce the upper register of audio frequencies. Generally used with woofers, tweeters are commonly used in the modified sound systems of automobiles. When you…

Before taking on an expensive home project like crown molding, it is important to measure out the materials you need to fit the room. Not every set of walls intersect at a perfect 90 degrees. Rooms…

Tiles are normally cut with a tile-cutting board or a wet saw, although it depends on the type of tile, since natural stones and ceramics cut differently. However, you can also cut tiles with an angle…

After shooting a video, you may find that the shots look a bit boring because they were all taken from one angle and you wish you could have taken the shots from different perspectives to make them…

In the 2008 fighting action game "Super Smash Bros. Brawl," you can play as 35 different characters as you brawl against one another. If you want to save matches you really enjoyed, you can…

A machinist cannot afford to make mistakes when drawling angles on a blueprint. A machinist generally uses a tool that every grade school student knows: a protractor. A protractor gives you the…

Double-angle cutters such as end mills are used on the mill for certain cutting operations. Over time, the profile and/or bottom of the end mill can become dull. Rather than just throwing it away, it…

Air tools, such as an air through angle grinder, utilize compressed air from an air compressor to run the tool as opposed to tools that run off electricity. Air tools work in a very similar manner as…

The use of ramps helps transfer loads or wheeled apparatus from a lower spot to a higher spot, such as moving from the ground up to a raised building. The higher up the ramp goes, the larger the angle…

The Meyer E-47 is an aftermarket snow plow designed for mounting on mid-size pickup trucks and four-wheel drive vehicles. The E-47 is suitable for medium-duty use in clearing light to moderate…

There are two types of curves, and calculations to be aware of when angling pipes off a common centerline. Pipe benders, a tool used for bending metal pipes, automatically calculates the "bend…

Angled luffa, also known as Chinese Okra, ringed gourd or sponged gourd, grows as part of the Cucurbit family and follows some similar rules. These tropical plants hail from India and Asia and require…

Angle grinders are highly versatile tools used for all kinds of purposes. These simple machines essentially consist of a rapidly spinning circular blade attached to a metal casing that contains an…

Proper care of your horse's feet helps prevent diseases and illnesses in the animal, particularly if it is kept in a small area such as a stall. Cleaning should be performed daily and hooves should be…

Many cement projects are built on slopes. This additional complication can make the pour much more difficult than a structure poured on level ground. However, using the proper techniques, even a…

An angle grinder is a hand-held power tool used for grinding, cutting and polishing. They come in various sizes depending on the application. The size of the angle grinder you need will depend on a…

Garages give you the opportunity to store large and dirty equipment meant for the outdoors such as bikes, garden supplies and outdoor maintenance materials. However, garages with minimal space after a…

When making a picture frame, side board or anything else that has corners, it is vital to ensure the right angles are set properly. If this is not achieved, the entire piece can be skewed and other…

Unlike algebra courses, which focus on solving problems, geometry largely deals with constructing formal proofs. In a proof, each step must be justified by one or more theorems or equality statements.…

The penoscrotal region, an umbrella term relating to the penis and scrotal regions, is an area in which patients can experience problems, but may be too embarrassed to come forward about them. One…

Converting a weedeater for use as a remote controlled airplane engine is actually quite simple, cost effective, and it can give a person a great sense of accomplishment. Unlike model airplane engines,…

Pirates of the Caribbean Online is a PC massively multiplayer online role-playing game (MMORPG) for computers using the Windows operating system. Players create and customize pirate characters, build,…

Accumulating a collection of good wine is a enjoyable goal of many wine drinkers and connoisseurs. Finding the space for storing this collection can prove to be a different story: Commercial wine…

The Pythagorean theorem tells you that for any right triangle, the square of the longest side of the triangle, which is its hypotenuse, equals the sum of the squares of the two sides. This is often…

Electron geometry and molecular shape are both complex concepts used in chemistry. While they are often similar, there are several key differences, most notably that every electron geometry is…

The electricity that comes from your wall outlet is called alternating current, or AC, because it flows both backwards and forwards in a steady rhythm. The kind of electricity used inside most…

Cuboids are commonly found in everyday boxes. It is a rectangular cube with six flat rectangular faces where all the sides are at right angles. This is different than a cube where the length of each…

If you live in Anchorage you can expect to have an abundance of snow. Management of snow and ice is important for hospitals, senior housing facilities, airports, shopping centers and condominium…

There are several definitions of a shear plane depending on the field of study. In geology, shear plane refers to the plane or surface where rocks rupture due to compressive stress. Shearing occurs…

Cross-polarization indicates radiation waves in the opposite direction of the radiation wave polarization that is being discussed. Light, sound and radiation waves can all be cross-polarized when…

One of the advantages of alternating current, or AC, is the ease in multiplying its voltage. A simple two-diode circuit doubles the peak voltage of an AC wave, transforming it into useful direct…

A glacier is more than just a big chunk of ice. Science defines it as a body of ice that consists mostly of recrystallized snow and gets bigger or moves outward in response to gravity. The two things…

Although polarized light may seem far removed from everyday life, it plays a role in everyday products like glasses and household windows. At theme parks, for example, some rides use three-dimensional…

The Polarization Index (PI) is used to determine the fitness of a motor or generator for use. The index is derived from calculating measurement of winding (electrical) insulation resistance. The…

A cone is a three-dimensional object having a circular base and vertex. Any cone is characterized by the radius of the circular base and the height, which is the distance from the vertex to the center…

An integral and derivative are like a mother and a trouble-making two-year-old: one undoes with the other one does. This is why another term for "integral" is "antiderivative." If the derivative of…

When choosing a propeller for your cruiser, you will want to consider a prop that is designed for your vessel and will be fuel efficient without loss of power. Consider the type of cruising you'll be…

An angle is defined as the figured formed when two legs, or rays, share an endpoint called a vertex. The rays of any angle can be transformed into a right triangle in order to find the magnitude of…

Most electronic appliances, such as TVs, computers, clock radios and cellphone chargers to name a few, require a variety of direct current (DC) voltages to operate. The electricity available in your…

Rulers are etched with markings that denote the measurement of distance. Every inch of a 12-inch ruler is marked out, and between each inch, every 1/8 of an inch or 1/16 of an inch is marked.…

In geometry, an arc is the portion of a circle who end points intersect the rays created by the vertex of an angle. An arc length is the length of that segment of the circumference of the circle and…

The measure of an angle in a triangle can be determined with the side lengths, a scientific calculator and knowledge of the inverse trigonometric relationships. If you know only two side lengths you…

Coastal developments, such as beach side homes, are lucrative property investments for consumers. However, volatile ocean waves can easily damage property during storm surges. Many shorelines have…

You don't have to walk to an object to obtain its relative height. Instead, you can use geometry and a few tools to determine the height remotely. The key is to determine the exact height from your…

Geometry is the oldest branch of mathematics. Attributed to the Greeks, geometry was invented, in it's modern form, by a mathematician named Euclid. Euclid codified his knowledge of geometry in a book…

DC voltage multiplier circuits convert AC voltage to DC voltage using either half-wave or full-wave rectifier circuits combined with clamping circuits. By connecting multiple circuits together,…

Four seasons -- autumn, winter, spring and summer -- occur throughout the year. Each hemisphere experiences an opposite season. For example, the winter season in the northern hemisphere is summer in…

You can find the angle of a conical hole using a protractor and a ruler to get a sense of the steepness of the drop. A conical hole has the shape of the inside of a hollow cone just like looking into…

A right triangle has a 90-degree angle within the interior and three sides, two shorter sides offset by a longer, slanted side called the hypotenuse. The Pythagorean theorem defines the relationship…

A rectangle is a quadrilateral with four angles equal to 90 degrees with opposite sides of this shape being parallel and equal to each other. To calculate the area of the rectangle, you need to…

Highway design involves drawing curves at intersections to facilitate turning radius. Surveyors draw these curves to ensure cars and trucks have sufficient space to make turns. Drawing the curves…

A limit, in mathematics, is the value a function approaches as a variable within the function approaches some number. Trigonometric functions are functions of angles and relate angles of triangles to…

Constructing a triangle from two angles and an included side is relatively easy. You simply copy one of the sides, including an angle at the endpoint of the side, and then mark off the length of the…

A bridge rectifier is an electronic circuit that converts AC (alternating current) to DC (direct current). Four diodes (or "rectifiers") are used to convert the voltage from the entire alternating…

Keep it plumb, level and square are the main rules of engineering, architecture, carpentry, wood working and home repairs. Each of these parameters is a function of right angles. Plumb means that that…

Trigonometric functions relate the angles of triangles to the ray lengths of the triangle. Trig limits are most easily solved when the expression is first put into terms of sine and cosine. Because…

Mathematics is a core subject within school and can have important uses in everyday life. Trigonometry, a subset of mathematics, is the study of triangles. The three trigonometric ratios are sine,…

A "trick of the trade" is a shortcut or clever ruse that the knowledgeable practitioner uses to make his work or employment easier. Trigonometry is a trade, and geometricians have their own tricks of…

The first time you find it necessary to integrate a square root function, it may seem a little unfamiliar to you. The simplest way to tackle the problem is by converting the square root sign to an…

It is easy to multiply the voltage of alternating current (AC) signals, those having a current flow that repeatedly changes direction. A transformer, for example, increases or decreases AC voltage by…

Photographers often see photos in their minds before actually taking the picture. By changing the angle of the shot, you can capture a completely different view of the same object. Taking photographs…

Hardwood floors can be a major renovation project that quickly becomes costly. Whether you are looking for crafty ideas on how to give your hardwood floors a personalized, artistic feel, or are simply…

In the early 1800s, Etienne Louis Malus was looking through a piece of translucent mineral when he noticed that he could make the light reflected from the palace across the street get dimmer and…

Light consists of waves that vibrate perpendicular to the direction in which it is traveling, making them transverse waves. The vibration can occur up and down, side to side, or somewhere in between.…

A ship's hull, hidden beneath the water, possesses many intricate propeller designs for easy maneuvering through the water. A basic propeller, or propellers, propels the boat forward during open ocean…

Hollow grinding is the creation of a concave or hollowed channel along the cutting edge of a blade. This technique is used on blades that require a much sharper edge than is possible with a simple…

A tessellation is a repeating pattern of polygons that covers a plane without overlapping or leaving any gaps. For a pattern to form a tessellation, the angles that meet at any corner must total 360…

Erosion is the transportation of soil or stone particles. Weathering, by contrast, refers to stone or soil being broken down by physical and chemical processes. Erosion, while usually a slow process,…

Glaciers are gigantic bodies of frozen freshwater that move slowly over land. Originating in the Ice Age, these ice giants last millions of years and gradually shape the land around them. Many valleys…

Learn to create parallel lines using only a straight edge for math homework or household construction projects. Being able to make perfect parallel lines will keep your projects looking neat. Parallel…

Learn to determine angles in two-dimensional space to excel in math class. Also, angle measure is an important skill for woodworking and home construction projects. Angles are typically measured in…

Learn to change the bounds of a definite integral to get the correct answer when doing calculus problems. A definite integral is a mathematical operation performed on an equation for a curve that…

If you have a triangle with one right (90 degree) angle, then you can use elementary trigonometric functions to determine relationships between the remaining angles and sides of the triangle. The…

Teaching molecular geometry doesn't have to involve molecular orbitals and quantum mechanics. In fact, you can teach it to nearly any class or audience in terms of valence-shell electron pair…

When you say you want to get the right angle on something, you're saying you want to approach what you have in mind from the right direction. This is because angles indicate direction. And if you put…

Isosceles triangles have two sides of the same length. Unlike an equilateral triangle, which has three equal sides, an isosceles triangle can take on different forms, from short and wide to tall and…

Building something is a very fulfilling activity. You research, gather the necessary tools and supplies, and achieve the satisfaction of making something. Step-by-step instructions make the building…

Polarization is handier for a lot more than fancy sunglasses. Polarization can be used to double the amount of information carried on optical signals, enhance contrast in microscopy, and probe the…

The U.S. Geological Survey has studied more than half of California's 840 miles of coastline during the past 40 years and found 66 percent of the beaches eroding, according to a 2006 report. The…

The trigonometric functions are based on properties of right triangles. Right triangles have one 90-degree angle on the interior, two shorter sides and a longer, slanted side called the "hypotenuse."…

When working on cabinetry it's sometimes necessary to stretch a clamp diagonally from corner to corner. You can't place the jaws of a clamp on a 90-degree corner unless you use a right-angled jig that…

Accurately finding angles is an important skill and getting it wrong can be both expensive and dangerous. The NASA Mars Climate Orbiter blew itself apart after entering orbit around Mars at too steep…

To transform a set of coordinates into angular notation, you will need to use both the Pythagorean Theorem and the inverse trigonometric functions on scientific and graphing calculators. By knowing…

The traditional Bowie Knife has a single sharp edge, is about 12 inches in length and is rooted in American tradition. Bowie Knife enthusiasts may enjoy exploring variations to the traditional Bowie…

A right triangle is a triangle with an interior 90-degree angle and three sides, the longest of which is called the hypotenuse.The Pythagorean theorem defines the relationship of a right triangle's…

The terminal side of an angle is a trigonometric term used to describe the line that determines the degree of the angle. This line begins at the origin but can end anywhere on the coordinate plane.…

The trigonometric functions of sine, cosine and tangent are defined in terms of the sides and angles of a right triangle. A right triangle consists of one 90-degree angle and three sides, the largest…

Latitude is the measurement of distance, in degrees, from an equatorial point to a "small circle" that circumscribes a sphere. This distance is most often expressed as an angle whose arc begins at an…

With the knowledge of the ray lengths of a triangle, also known as legs, it is possible to find all angles involved with the triangle through use of the basic inverse trigonometric identities arcsine,…

Half-round wire is used to for many things in the craft of jewelry making. The versatile wire can be shaped into links to form chains of all sizes. It can also be wrapped around items to create…

Which geographical features appear on a coastline is determined by the relative strength of the waves and weather conditions the coast endures and the relative hardness or softness of the rock the…

In geometry, a right triangle contains a 90-degree angle, two shorter sides and a long side called a hypotenuse. One of those three values can be calculated using the Pythagorean theorem if the other…

The right angle weave is a technique that combines beads together with long strands of string. After the technique has been learned, you can create a number of different styles of bead jewelry. The…

A Sierpinksi Triangle is an example of fractal geometry (snowflakes are another example), a relatively recent language for describing complex forms found in nature. Sierpinki triangles are elegant to…

Knot tying is one of the most basic tasks of sailing, and sailors traditionally practice tying knots whenever they are in port. Gifts that include sailors' knots instantly remind a sailor of his…

Capturing important moments on film, video and still cameras is one way to keep memories alive. Many amateur photographers are turning to digital cameras and even cellphones to take pictures, but not…

Seawalls protect coastal areas, particularly those near human habitations, from heavy seas. They can be immensely effective; in Pondicherry, in eastern India, seawalls built in the 18th century by…

In trigonometry, the secant is identified as the ratio of the length of the hypotenuse of a right triangle to the length of the leg adjacent to the specified angle. This is often written in shorthand…

Installing molding requires many different skills including how to cut mitered joints for corners that are at 90-degree angles. On older homes, where the corners may not be at precise 90-degree…

Studying the nature of the primary prism colors in physical terms involves the disciplines of psychology, physiology and biology as well as chemistry and physics. The complex topic of human color…

If you have ever made castles in the sand, you might be familiar with the angle of repose. Slowly pour sand out of a bucket. It will form a cone-shaped pile. As you pour more sand onto the pile, the…

The tangent of an angle is used to calculate the rise for a stair step if you already know the tread width and the elevation or stair angle. If you know the width of the tread is 10 inches and the…

Drawing angles is a skill required in many situations, from school lessons through to working as a cartographer or rocket engineer. Although it is possible to draw many angles with a compass, it is…

Being able to draw angles without the aid of a protractor is an important architectural and mathematical skill. Many angles can be drawn with a compass, also known as a pair of compasses. A compass is…

In calculus, the indefinite integral is the most general form of an anti-derivative for a function. This means, given a function F(x) and its derivative f(x), F(x) is the anti-derivative of f(x). The…

When rocks break down due to chemicals, vegetation, temperature change, water or ice, they are weathering. The process of erosion is the transport of these broken pieces away from their original…

The words protractor and goniometer are synonyms in many cases. Both devices can measure angles. However, the protractor is much more limited in its scope of applications. The goniometer comes in many…

One of the fundamental principles of geometry is that of sine, cosine and tangent in relation to triangles. These functions allow a person to learn missing angles or sides if one three of either are…

A full circle measures 360 degrees. An angle of 45 degrees is equivalent to 1/8 of a full circle, or half of a right angle. Two simple ways to measure a 45-degree angle are to use a protractor or use…

Trigonometry is the study of the relationship of sides and angles in a triangle. Mathematics students may wonder what use this is in the real world, where an abundance of right triangles is not…

The integration of trigonometric functions is a staple of problems given to calculus students. Trigonometric integration relies upon the large range of trigonometric identities that are available to…

Plain wooden boxes are very useful, but may not be very decorative. One simple way to make a plain box more attractive is to add a ring of molding or trim around the top or bottom edge of the box.…

Many backyard bird enthusiasts place feeders in their yard with hope of attracting a variety of wild birds. Soon it becomes apparent that not all birds feed on the same thing: Blue jays love whole…

A triangle is a simple geometric shape that conforms to mathematical principles discovered in antiquity. Triangles are made up of three points joined together by lines held at certain angles to one…

Integration provides the area under a given curve. It is one of the basic tools in the field of calculus. The plethora of trigonometric identities makes them good for practicing integration…

Coping trim is a technique that creates perfect joints by cutting the profile of one trim piece into the adjoining piece to create an invisible joint. The techniques used are the same, no matter what…

When you don't have one piece of molding long enough to span a wall, you will have to join together two pieces of molding. You can do this using a scarf joint which is formed by cutting the meeting…

Calculating a normal triangle can be determined by using a grid, such as a piece of graph paper. To do this, you need to first start with the shape of a square. This is called the box method and is…

A hexagon has six coplanar line segments connected end to end, forming a closed shape. The polygon gets its name from Greek, a combination of "hex" (six) and "gonia" (angle). The hexagon shape is…

Erosion is the natural wearing away of coastal land by elements present in these types of environments. Erosion over many years is how beaches form, but in this instance, coastal erosion refers to the…

The act of measuring the depth of a body of water is a practice as old as maritime navigation itself, and has many important applications. Perhaps you are trying to determine the length of piling…

A right triangle has one angle that is equal to 90 degrees. The other two angles are acute (equal to less than 90 degrees). The longest side of a right triangle is called the hypotenuse. The…

Camera shots and angles are determined by the positioning of a camera in a certain way. Often used in cinematography, angle shots not only change the visual dynamics of films and shows, but they also…

Mathematical integration is one of the two primary tools of calculus. In order to integrate an equation, called function f(x), you must have a basic understanding of differential and integral…

Triangles offer the most common example of how to calculate the degrees of an unkown angle, because the angles always add up to 180 degrees.They often have equal sides, angles or a combination of…

The diagonal of a right triangle, which contains a 90-degree angle, is called the hypotenuse. This diagonal forms the side of the right triangle directly across from the 90-degree angle. The ancient…

The length of a diagonal for a triangle can be found by first starting with a simple square. A square can be split into two right triangles. The diagonal of a right triangle is the hypotenuse. Finding…

Cove molding can be difficult to miter. It can be easier to cope the molding with a small coping saw. To "cope" molding is to cut away part of the molding by hand. This allows the profile of the…

A right triangle's longest side is called its hypotenuse. You can calculate it without any measuring tools as long as you know how long the other two sides are. This is because of Pythagoras' Theorum,…

Trigonometry is the study of triangles, specifically measuring their sides and angles. There are some easy-to-remember rules for determining angles in a cinch, such as the fact that the sum of the…

The protractor is a tool that directly measures angles, but it is not something that is commonly carried around in one's pocket. If you find yourself in a situation that requires you to measure an…

Modern ships use the GPS system to locate their position and speed. Before the digital era, ships were navigated by sailors who calculated the ship's speed through the water, compass direction and…

Quality mitered corners on crown molding are a sign of true craftsmanship. Oftentimes, the pieces are cut too short and the ends are forced together, leaving a joint that is uneven, has gaps or must…

A 45-degree angle is a right angle bisected. A right angle is 90 degrees. To draw the 45-degree angle, you don't need a protractor, just a ruler. Using the ruler method, you will create a right…

A tessellation is a pattern of identical shapes seamlessly put together. The interlocking pattern common to many brick homes is an example of a tessellation. A basic tessellation consists of geometric…

Vertical angles are those across from each other when you cross two lines to form an X. In order to find the measurements of the angles, you have to have either the measurement of at least one angle,…

Coping is a traditional joint cutting method used to create smooth, tight joints in moldings. A coped joint is made of one 90-degree piece fitted into the corner of the wall. The remaining piece has…

Crown molding can give even experienced carpenters trouble until they learn one simple trick. No matter what the corner, always measure the wall and mark that measurement along the bottom edge of the…

Crown is the name of the decorative molding, typically made of wood, that runs along the top of your walls. Crown corners must be specially cut in order to match up. Most crown molding today is cut on…

An oblique triangle is defined as any triangle that does not include a 90-degree angle. This includes acute triangles, where all three angles are less than 90 degrees, as well as obtuse triangles,…

Sharpening generally refers to the process of putting a sharp edge on an object. Honing, on the other hand, refers to making an existing sharp edge more keen. Honing is therefore an action that is…

Tangent is one of the three basic trigonometric functions, along with sine and cosine. Finding the tangent of an angle in a right triangle is useful for uncovering more information about the triangle.…

Crown molding creates architectural detail when added as a capital at the top of your window frames. Choose a molding that best complements the window and the existing woodwork in your space. Moldings…

Outside crown molding corners must be either mitered or matched up to corner blocks. With inside corners, you have two options. The first is to cut a miter and fit the pieces together, which may or…

Electric pencil sharpeners work faster than manual sharpeners and are more effective at creating a smooth, even edge to the tip and inner lead. According to DrawingCoach.com, an electric sharpener can…

Using a protractor to find angle measurements is simple but does require some attention to detail. Protractors usually come in a half-moon style with a hollow center, with what look like ruler marks…

Weather, plant growth, animal activity---life itself is dependent upon energy garnered from light. So it is no surprise that people through the ages have been fascinated by light. We control the…

Electric grinders are frequently used to grind the two intersecting planes of a cutting edge, such as the blade of a knife or chisel, to as fine a point as possible. A honing guide can facilitate the…

For RC hobbyists, tinkering with a machine is half the fun. RC airplane enthusiasts can learn how their plane works and improve it at the same time by performing an engine conversion.

LGB is a brand of G-scale trains and equipment, the largest model railroad scale. G equipment is manufactured at 1:22.5 scale, which means 1 inch on a model represents 22.5 inches on the actual…

Radio controlled (RC) airplanes have become a popular hobby by 2011. You can buy small inexpensive propeller planes or jets that are fast and a challenge to fly. You can buy prop planes with high…

Fish finders and depth finders use a sonar-emitting transducer to get the needed information on the water underneath the boat. The sonar waves emit out of the transducer on the hull of the boat and go…

Bridge rectifiers are used to convert AC power from the wall outlet into DC power; rectifiers are common in consumer electronics that require DC power. Internally, a bridge rectifier contains four…

A table saw is a versatile tool used to cut wood and is sized by the dimension of the blade. The benefit of a portable table saw is it can be moved to different locations instead of bringing materials…

From building engineers to architects to students, calculating the radius of a curvature has practical and classroom applications. Students use the radius of a curve in geometry, calculus and…

According to "Math Open Reference," a website that specializes in the definitions and etymology of mathematical terms, an arc is "a portion of the circumference of a circle" that is designated by two…

Finding the radius of a circle from chords -- straight lines drawn between two points on the edge of a circle -- isn't just busywork. Blacksmiths often had to reconstruct wagon wheels from fragments…

If you've ever wondered how that little-bitty propeller can move that great big ship, part of the answer lies in a simple bit of multiplication and division. If you know some very basic facts about…

Geometry is the branch in science that involves the measurement of the shape, size and position of figures as well as the properties of space. A mathematician who works in the field of geometry is…

Finding the radius of a curve has several practical applications. Architects and building engineers use it to build along curved surfaces. Road and railway engineers use it to design safer turns. You…

Using a power saw requires a steady hand. But even the most skilled hand-eye coordination does not always produce a clean, straight cut of wood. Enter the radial saw. Radial saws come in a variety of…

Since the 1980s, the Parachute Industry Association (PIA) has formally measured the canopy volume of hundreds of different parachutes. Because the process for measuring canopy volume is not precise…

In seafaring and air travel, the term knot refers to the ship's or aircraft's speed. Modern ships and aircraft use electronic equipment to measure knots, but this was not always the case. As recently…

Tennessee is home to a range of semi-precious stones, including the state gem the Freshwater Pearl. In particular, gems are likely to be found in the east of the state, where the Appalachian Mountains…

Consisting of several blades connected to a central hub, a propeller is the source of propulsion for boats, ships and some airplanes. It was developed in the 19th century as an alternative to paddle…

A development in architecture is to create cathedral or angled ceilings. These are not flat but rather follow the slope of the roof. Traditionally, crown molding is placed on the point of intersection…

A rod bender is a tool used to change the shape of a straight metal bar. Normally you couldn't just bend a bar to the angle you needed, but using a rod bender makes the angling possible. You could…

In a perfect world, machine components would be completely rigid and and connected to one another. They would never move, change shape, or cease to function precisely in the manner in which they're…

Individual ice crystals are almost impossible to see in ordinary light. For this reason, scientists examining ice crystals for example, in ice cores, have to use polarizing films to see the borders of…

Maryland might not have the rich rare gem deposits of western states such as California and Utah, but the Mid Atlantic state is an abundant home to a few types of gems. Maryland even has its own…

Choosing the proper type and size propeller for your model airplane is a crucial decision in terms of flight performance. Certain considerations must be taken into account when selecting a good…

Directional couplers are devices used in radio technology and microwave signal routing. The directivity of a directional coupler is a measure of how well the coupler isolates the microwave signals…

Chromaticity is the quantity that classifies color quality with respect to the dominant wavelength present in the color. While humans qualitatively describe colors by names associated with specific…

In order for an airplane to take off and move through the air, it needs thrust. Thrust is determined by the diameter of the propeller. However, you can't just pick a propeller at random, fasten it to…

A radial arm saw is an important tool for woodworkers, thanks to its ability to cut or "rip" through wood quickly and safely. The saw features a circular blade, a table and a horizontal sliding arm to…

Grid convergence is a point in the Universal Transverse Mercator (UTM) system. The UTM system is a method of specifying locations on the Earth's surface. It was designed by the United States Army Corp…

The radius of an angle is defined as the line segment that begins at the center of the circle upon which the arc of the angle falls and terminates on the perimeter of the circle. Any given arc length…

Figuring out how to cut angles for woodworking is one subject, but another equally important matter is machine calibration. In the process of figuring out angles, it is critical to know that the…

Coaxial cables carry electronic signals at radio frequencies between equipment stages and attach transmitters to antennas. The frequency ranges for various types of BNC connectors depend on impedance…

A four-stroke engine has more moving parts than a two-stroke, which can make it more difficult to start and maintain. It produces a low growl compared to the two-stroke's high-pitched whine, and is…

If you want to build a wooden truss, it is possible to do so even if you don't have a lot of engineering experience. However, these simple wooden trusses should not be used to hold up any type of…

A universal coupler is also known as a universal coupling, Hooke's joint, Cardan joint and U joint. Its primary purpose is to connect two otherwise rigid pieces of equipment and allow movement.

The Uberti 1873 Deluxe is a reproduction of perhaps the most famous rifle of all time, the Winchester Model 1873 -- which garnered the sobriquet of "The Rifle That Won the West" due to its widespread…

Shear angle is evident in any shearing environment from cutting paper with a pair of child's scissors to shearing heavy duty iron bar stock with a hydraulic shear press but it is typically the concern…

Measuring angles without a protractor is one of the fundamental aspects of geometry. Sine, cosine, and tangent are three concepts that will allow you to calculate an angle based solely on the lengths…

The lumen and the candela measure slightly different things. The candela is a unit of luminous intensity that measures the power emitted by a light source in a particular direction. The lumen measures…

Rack and pinion gears consist of a round gear and a flat, toothed component that is moved linearly by the gear. As the round gear turns, the teeth interleave with the teeth of the flat component,…

Raw metal edges on newly built items have sharp square edges, residual oil and possible burrs. The process to prepare the edges for painting requires removing any burrs, beveling the edge and removing…

Changing the oil in your Harley-Davidson motorcycle is essential to keeping the engine running smoothly. Check the oil in your engine every time you ride your Harley. Most dealers and independent…

Rectifiers convert alternating current to direct current. These circuits primarily comprise diodes and a capacitor, but they may also use a voltage regulator to trim the output to the desired DC…

According to Engineer's Edge, bevel gears have "tapered conical teeth which intersect the same tooth geometry." These gears work well transmitting motion "between shafts with intersecting center…

Spotting scopes are convenient for outdoor activities like bird-watching, safaris and basic astronomy. They are lightweight and portable, unlike standard telescopes. The two most common types of…

Trigonometry is the study of the mathematical relations among the sides and angles of triangles. The cosecant is one of six trigonometric ratios defined for the lengths of the sides of a right…

Timeless and easy to clean, hardwood floors enhance the beauty of any interior. Whether natural or stained, know the structural differences between solid and engineered hardwood floors before deciding…

A goniometer is a device used to measure angles or to allow an object to be rotated to a precise angular position. It has a variety of applications, ranging from medical to scientific.

Kunzite is a semiprecious stone, a transparent or translucent variety of the mineral spodumene. Chemically, the mineral is a member of the pyroxene family, minerals that form in an igneous…

The delta angle, as it is commonly known in trigonometric problems involving arc length, is the angle between the two lines that are tangent to each side of the arc, on the outward side of the…

The Spore PC game allows you to design your own creature and follow it through five different stages of evolution. Changing the camera angle allows you to view your creature from a different…

If you are learning how to draw, the first thing you need to learn is how to draw basic shapes such as rectangles, circles and so on. The second step is drawing basic 3-D shapes such as cubes, spheres…

A wire wheel brush makes light work of heavy duty cleaning, paint removal and grinding off burrs. The wire brush is intended for use on a rotary tool such as an angle grinder. The rotation of the tool…

Corner shelves are unique because they add personality to a room. They stand out because of their shape, and provide storage space for smaller items. Corner shelves can also be a great method of…

There's a right way and a wrong way to clip roses. Many people fail to have beautiful roses because they have been cut wrong. But it's not just the cutting that goes wrong; roses need to be hydrated…

Drawing a realistic looking three-dimensional bed is a necessity for some professions in the art and design industry such as in painting, interior design and decor, animation and similar fields. Aside…

Though plywood is inexpensive, it's an ideal wood for making a simple pedestal. A person with little woodworking experience can work easily with plywood because of its light weight. The wood is also…

In math, angles and geometry are significant in that they are constantly being used in everyday life. Use angles in math with tips from a mathematics tutor in this free video on math lessons.

In math, alternate interior angles are on the opposite side of the transversal. Discover the definition of alternate interior angles in math with tips from a mathematics tutor in this free video on…

The trick to styling an angled bob haircut is to make the back look much shorter than the sides and front. Use a smaller round brush in the back of an A-line bob to shrink up the ends with help from…

For those who use woodworking tools, specifically chisels or other flat shaping tools, sharpening these tools is an ongoing process. Contrary to popular belief, sharp tools are much safer than dull…

Coping crown molding is a woodworker's trick. Crown molding is the fancy trim work that is mounted between the ceiling and the walls. The molding may have curves and other patterns and shapes, and…

Pocket knives are a handy tool to keep on you at all times, as there are many opportunities to use a pocket knife on a daily basis. If you decide to carry one, you may need to perform some basic…

Defense of the Ancients (DotA) is a third-party modification for Blizzard's Warcraft 3. Since it operates using the Warcraft 3 engine, it retains the default control scheme. Being able to change…

Maintaining and sharpening a bowie knife presents a challenge even to people experienced with knives. The blade of a bowie knife has a distinct curvature at the end and can reach lengths up to one…

In mathematics, the term "cuboid" has a few different definitions. Generally, the term refers to a solid with six flat faces, eight vertices and 12 edges. A square pyramid with its apex cut off is an…

It's common to come across an unexpected situation where a knife would come in handy. Many people carry a pocket knife with them at all times for such occasions. Pocket knives should always be kept…

No matter how well you try to be prepared, sometimes the unexpected occurs and you do not have the right tools at hand to do a job. Architects, engineers and carpenters frequently must measure angles,…

Matter can exist in three different states--as solids, liquids, and as gases. Gases, like air and helium, are very lightweight, and their molecules are not bonded to each other. They tend to have a…

Coastal erosion is the process by which coastal land is worn away by natural forces. Coastal erosion is an issue for people living on or near the coast as well as marine organisms in bays, estuaries,…

To "bisect" an angle means to split it in half, or to find its middle point. Using only a ruler and pencil, you can easily bisect the angle formed where the end of two line segments meet. This is a…

A plane mirror is a mirror with a flat surface, i.e. a plane. Bathroom mirrors and dressing mirrors are both examples of plane mirrors. All plane mirrors share certain physical characteristics which…

A triangle with the angles of 30, 60 and 90 degrees is by definition a right triangle because one of the angles is 90 degrees--a right angle. Such triangles figure heavily in trigonometry instruction,…

We want science to predict the future. Science cannot do this very accurately accept in very specific cases. The case of projectile motion is very well defined. We know what a projectile will do given…

"The Angle of Repose" is the title of a novel written by Wallace Stegner and published in 1971. The book won the Pulitzer Prize for Fiction in 1972. One of the ideas the book is based on refers to an…

A miter box has slots for receiving a saw blade at 45-degree angles to cut a piece of lumber. The most common use for a miter box is cutting joint angles on baseboard and moulding. Other miter cuts…

In geometry, a hexagon is a polygon with six sides. A regular hexagon has six equal sides and equal angles. The regular hexagon is commonly recognized from honeycomb and the interior of the Star of…

Right angle trigonometry relies on the geometric ratios between sides and angles in right triangles to calculate the value of one part when the other is known--for instance, finding a missing angle…

While many people believe that the sun is directly above them at noon, this is only true on some parts of the planet on any given day. The Earth's rotational axis is tilted by an angle of 23.4…

On an airplane, the propeller or, on multi-engine planes, propellers provide the thrust needed to move the airplane forward. Acting as giant and powerful fans, propellers force air movement by slicing…

Woven crystal bracelets are simple to make using a right-angle weave technique. Select two colors of crystal beads to create a sparkling bracelet that will coordinate with other items in your…

As cameras and video cameras become more technologically advanced and more affordable, more people are purchasing camera equipment. One of the first techniques to master as an amateur photographer or…

You can measure the volume of a marble a couple of different ways. One is by direct measurement of the diameter. Another is by displacement when submerged in water. The latter may be more appropriate…

The points of the familiar five-pointed star have 72-degree angles. The lines emanating from these points join up at inward-pointing points that have 108-degree angles. These angle measurements…

In video games, film and photography, nothing is more important than the art of camera angles. Camera angles are used to set a mood and/or tone for a scene so viewers or players can better understand…

If you are a coffee drinker, be aware of the effect that this dark liquid can have on the appearance of your teeth over time. The coffee color can slowly absorb into the layers of your teeth, making…

A combination square is a useful measuring tool used in carpentry and woodworking. The tool has a ruled straight edge attached to a roughly triangular shaped metal piece that is positioned at…

A prism is a ocular device used to cause deviations or lateral displacement of light and to break light into its component colors. Physicists use prisms when studying the physical properties of light…

Tension is the force with which a rope or line pulls. You can find the tension in lines in a static situation if you know the lines' angles. For example, if a load is on a slope, and a line parallel…

"Work" has a specific meaning in physics, as discussed in Halliday and Resnick's "Fundamentals of Physics." It's the product of the distance a body moves and the force in the direction of motion that…

The spring angle on crown molding is the angle formed from the back of the crown molding to the wall. You must know the spring angle for your crown molding to select the correct setting on your table…

"Rappelz" is one of the many popular on-line role-playing games that appeared in the wake of games such as "Ultima Online" and "World of Warcraft." You play "Rappelz" as a character caught in an…

Molecular geometry is just one aspect of molecular science. Molecular science can include molecular sizes, formulas, and spectroscopy. The concepts of molecular geometry and molecular science were…

Capturing animals for food is sometimes necessary in survival situations, and small animals are easier to process. A figure-4 squirrel trap is often referred to as a deadfall trap. It is a trigger…

Triangles and angles are used in many everyday activities, including crafting, sewing, construction, roofing, architecture, and interior design. When any two lines meet at a point, they form an angle.…

With their flexible angles of operation and adjustable force levels, bevel gears are the driving force of many of our most commonly used machines. Without bevel gears, we would be unable to drive our…

Headshots are used by models, actors, and other entertainers and are typically included with a resume when interviewing for a position. The art of taking a great headshot rests on proportion, balance,…

Many factors such as terrain, wind direction, ocean currents and ocean proximity, influence the climate of a given region of the earth. One of the most fundamental factors is the latitude (distance…

Molecular geometry describes the three-dimensional arrangement, or shape, of the atoms within a molecule. The shape is determined by the repulsion of the bonded and lone pair electrons surrounding the…

There are few handheld power tools more useful for small crafts than a Dremel, but at first glance, a Dremel's cutting wheel may not seem like the most convenient means possible to cut accurate angles…

While hand-held camera shots can provide many angles and various on-the-move shots, sometimes you need a tripod or camera mount to provide the crisp, classic photo you need. Adjusting and tilting a…

The Float Tube is relatively new device that allows anglers and hobbyists to skim along lakes with little effort, for a fairly inexpensive price. The Float Tube gives the user a more personal,…

The human skeleton is a complex collection of different-sized and shaped bones designed around a specific purpose. It is symmetrical with two of every major structure except for the head and spinal…

The spinning knives on a jointer can do just as much damage to your fingers as a table saw blade. When the jointer is running, you must keep your hands at least 4 inches away from the cutterhead. This…

When you're at the lake on a beautiful, calm day, you may find yourself wanting to pick up sandstones and skip them across the water. With a little practice in picking out good sandstones and learning…

Wine racks can be a great woodworking project because there are different designs for all skill levels. If you are just getting your feet wet with woodworking, you might want to create a rectangular…

The science of gemology is fascinating not only for the professional but for the gemology hobbyist. Both the professional and the novice have one thing in common, the need for a high quality…

Few things lift our spirits like the sight of a bluebird on the wing. But it wasn't always so. In the 1950s and 1960s, the Eastern Bluebird was in serious decline due to rampant pesticide use and…

A phase vector, or phasor, is a representation of a sine wave whose amplitude, phase and frequency are time invariant. The projection of phasors onto the vertical axis gives their instantaneous…

Adams Golf has grown from a small, Texas-based fairway metal manufacturer to one of the golf industry's largest and most well-known club vendors. Adams is now best-known among professional and amateur…

It's hard to imagine going anywhere today without a GPS unit, a PDA or at least directions from a reputable map, but early explorers did without all of the above as they courageously forged their way…

In order to explain what a rotation tessellation is, you must know what a tessellation is. A tessellation is a geometric shape repeated to form a design or mosaic. It is also called tiling.

The indefinite integral is the foundational concept in integral calculus. It is the formalized statement of the antiderivative and consists of three basic elements. The first is the integral symbol,…

Crosshatching is an efficient technique for shading areas of a drawing. When executed properly, this technique creates an even layer of tone on your drawing paper that can be used to adjust value,…

"Pirates of the Caribbean" is a game that has little to do with the Disney-owned franchise, but plays decently on its own storyline. Those who choose to play the game for its main quests may find some…

The law of cosines is a common formula used in trigonometry, the mathematics of triangles. Cosines, along with sines and tangents, can be used to determine lengths and angles in any kind of triangle.

The Greeks believed that the seasons were caused by the goddess Demeter, queen of the natural world, who pined every winter for her missing daughter. These days, we have a few more facts to go on than…

A good hunting spotting scope is the one which is used in conjunction with a pair of binoculars and it has very good zoom eyepiece along with the fully multicoated lenses.

A protractor is an instrument used to determine the size of an angle. Protractors are usually first used as early as upper elementary or middle school. Although protractors come in a variety of shapes…

See why it is important to turn clean angles on a bowl on the lathe in this free woodturning video.

It is common knowledge that there are four seasons on Earth. Winter, spring, summer and fall pass each year. But what causes the four seasons?

Roses are very expensive and most people would like to keep them as long as they can. Expert florists have the equipment and knowledge to extend the lives and freshness of the roses in their shops.…

Grinding a knife is not the same as sharpening or honing it. The difference is that grinding removes large amounts of metal from the knife's blade, changing the cross section shape. Hollow ground…

For a pencil sharpener to be effective, the pencil must adhere to a standard design. Most pencils are designed at a standard diameter of 8 mm. This diameter consists of a thin graphite lead (pencil…

Glaciers can only form in polar regions or high mountains. This is because in those areas summer does get hot enough to melt all of the snow. The glaciers will not be at any more than a 30-degree…

One of the best things about photography is that you can use the camera in combination with a variety of other techniques to create almost any mood, setting or feeling you want. When you are just…

Navigating across the open ocean is no easy task and for the first explorers, wandering even slightly off-course could prove fatal. As a result, accurate navigation was essential, and the navigator's…

Sculpture is a very artistic and creative talent that creates beautiful works. Sculpture can be difficult, but is made easier by having the right tools. One tool that helps to form a piece is the half…

Elevator trim is used by pilots to hold an airplane at a particular pitch attitude. A wheel, lever, or switch in the cockpit adjusts a pair of small surfaces called trim tabs, located on the…

Whether you’re in someone’s home or out at a bar or pool hall, there are few social games better than billiards. As not every shot is going to be as simple as just hitting the ball…

A chain hitch is a secure method of attaching a line to a timber or larger rope if the line is sufficiently long. It is frequently used today to haul in fiber optic cable from the ocean floor.

A prime attribute of the Zerg race in StarCraft is its quick build times and low unit costs. It allows you to attack your enemy early on. No unit better exemplifies this than the Zergling. While on…

There are certain challenges in life that seem easy, but in fact aren't. Like the brain teaser on how to form a perfect right angle using just string. This is a great activity to teach children about…

A double marline hitch is used as permanent binding when multiple hitchings are needed. It is most commonly found as the first and last hitch in a row for additional security in a long row of hitches.…

Any time money is being won and lost, people will look for an advantage. While cheating in poker will certainly get you kicked out of a game, there is another kind of player called an Angle Shooter.…

A scabbard is a sheath for holding swords. These sheaths can be made from a variety of materials and metals. The following scabbard design is made from leather and can be fitted to any size blade.…

In the past, most people got their news from the daily newspaper and the nightly news. But now, more people draw their news from varied sources. There are so many types of journalism from so many…

Ultimate Mortal Combat 3, one of the most controversial games out there due to an overwhelming amount of blood and gore, is available to download on Xbox LIVE arcade. Play as your favorite of 22…

Loons are revered as elegant symbols of wild beauty among the landscape of the Pacific Northwest, western Canada and Alaska. They can be hard to identify though because their bodies sit low in the…

If the "Technical Support for Etch A Sketch" list that's circulating endlessly through the net is any indication (Q: My Etch A Sketch has funny little lines on it; what do I do? A: Pick it up and…