Triangles

Not every triangle in geometry has to be overly complicated. Learn about the simple definition of a triangle in geometry with help from a tutor in this free video clip.

Hands-on activities for triangles in geometry classes can really help your students understand the broader concepts at hand. Learn about hands-on activities for triangles in geometry classes with help…

A full connected pentagon is made up of a series of multiple triangles. Learn how many triangles are in a fully connected pentagon with help from a longtime high school math tutor in this free video…

Ambiguous triangles can seem difficult at first, but in reality you will soon find that they are actually quite straightforward. Learn about ambiguous triangle problems with help from a longtime high…

Vertices are a great tool to use to determine the proper area of a triangle. Learn about finding the area of a triangle using vertices with help from an experienced math tutor in this free video clip.

You can use the coordinates of a triangle's vertices and determines, along with a very specific rule, to find out its area. Determine the area of a triangle based on the coordinates of its vertices…

The area of an oblique triangle can be found using a very specific equation. Find the area of an oblique triangle with help from an experienced math tutor in this free video clip.

The PZS spherical triangle is a special figure found in spherical trigonometry. This triangle is based on the plane of a celestial sphere and has three different vertices: the pole, known as P, the…

Hand-knit triangular shawls look artistic, but can appear plain if the edges are left raw. One solution is to finish the triangular shawl with a clean-looking edging. Edging a knit shawl may seem…

A triangle hammock gives a rat a cozy place to lounge, offering the same combination of comfort and support that a backyard hammock gives to a human. The triangle shape offers the advantage of fitting…

Seeing anything but the T-Mobile logo decorating the screen of a freshly booted G1 phone can be a disconcerting event. The yellow triangle with an exclamation point in it indicates that the phone was…

The Greedy Triangle, by Marilyn Burns, is a book aimed at young children to teach geometric shapes. The book tells the story of a triangle who wishes to no longer be a triangle. He visits a…

You might get a triangle with an exclamation mark after attempting to upgrade the Android operating system on an HTC Evo 4G smartphone to version 2.3.3. A good option for dealing with this bug is to…

A triangle border adds something extra to almost any completed knitting project. A cape, blanket, sweater or scarf can benefit from the added length and shape that a triangle border offers. A triangle…

Japanese origami is not the only type of paper folding technique. A type of modular paper folding technique is called Golden Venture Folding or Chinese paper folding, in which paper is folded into a…

Hyperbolic triangles are shapes that exist in three dimensional space, often wrapped around a circular object. For this reason, we can use the tools of ellipses and circles to help understand…

Shawls have been a common knitting project for hundreds of years — and for good reason. They are simple to knit, warmer to wear than scarves and faster to finish than blankets. Shawls add a cozy…

The pocket triangle fold is a folded napkin that allows you to place the dinner utensils inside. When you are finished folding the napkin and insert the utensils, only the tops of the utensils will be…

Triangles, three-sided geometrical figures, come in six basic types and are found in many structures that we encounter daily. Educating people about triangles is important so they can recognize basic…

Kuta Software lets math teachers create unique geometry and algebra practice questions. One type of question it can create in its pre-algebra segment involves identifying triangles. It will give you…

A cabana is a structure that you can build to go next to your pool. The purpose of a cabana is to provide shade on hot and sunny days. Materials that you can use to build a cabana include wood.…

The uTorrent peer-to-peer networking program allows you to transfer data to and from other users over the BitTorrent protocol. When uTorrent is working properly, a green circle appears in the status…

Spyderco is a knife maker primarily known for their line of all-purpose hand knives. Used by police, hunting and fishing enthusiasts, the Spyderco line is available in many retail stores. The company…

Triangle trimmers are highly prized by quilters. The precision of the tool ensures even side lengths of each patchwork quilt piece. Sewing enthusiasts should have little difficulty mastering the use…

Dividing a square into eight scalene triangles, which are triangles whose sides are all of different lengths, is a variation on a number of similar puzzles that also involve dividing up squares. A…

Two polygons are congruent if the length of the sides and the angles of the first are all equal to the corresponding sides and angles of the second. The information available about the two polygons…

Triangles are polygons that have three points and three sides. It is one of the basic geometric shapes. The area formula for triangles is "area = 1/2 bh" with "b" meaning "base" and "h" meaning…

The classification of triangles lies with the three sides that construct them and the three interior angles that the sides create. Three different classes of triangles include the scalene, isosceles…

Triangles can be found everywhere -- on napkins, in the architecture of buildings and sometimes even floating high up in the sky (assuming you believe in UFOs). They are basic geometric shapes…

Trig is not the shorthand name of Roy Roger's horse. The full word is trigonometry, and this branch of mathematics involves the measurements of triangles and circles. Many students frustrate…

A quadrangle is a four-sided polygon. Quadrangles have interior angles that, when added together, equal 360 degrees. The quadrangle family includes squares, rectangles, parallelograms, kites, rhombi…

Pyramids were first being built during Egypt's Old Kingdom, between 2575 and 2150 B.C. The pharaohs established a peaceful yet powerful government at this time and pyramids were meant to be symbols of…

A line segment's slope defines how slanted it is. You determine slope by finding the relation between the x-axis and y-axis of a line. Once you understand the formula to determine slope using…

The perimeter of a triangle equals the sum of the length of the three sides. On a coordinate plane, a triangle may be identified by three points on the graph. If you have the three points, you can use…

The functions sine, cosine and tangent describe the position of a right triangle's angles and the length of its sides. The functions compare an angles opposite side and adjacent side to the hypotenuse…

The mass transfer rate in chemistry and physics quantifies the amount of moving matter transfer, in units of mass per second. You may use the mass transfer rate to measure the rate at which liquids…

In your geometry classes, you will need to become accustomed to modeling 3-D figures. Cubes, as far as 3-D figures go, are relatively easy to model because all of their edges are the same length. To…

Triangles are classified into three categories: acute, right and obtuse. Obtuse triangles have one angle that measures larger than 90 degrees. Obtaining a base and height measurement for an obtuse…

In your geometry classes, you will become experienced with using compasses to draw circles. If you have a line segment, along with a compass and straightedge, you may use the line segment and compass…

Bisecting a segment is one of the most fundamental operations in geometrical construction. Although simple in itself, bisecting is a procedure that a student will use over and over again in…

In geometry, you will frequently work with both circles and triangles. You can form circles in a number of ways, including using compasses and graphing the equations of circles. But you can also…

No matter how difficult math becomes, nearly every math problem can be divided into one of five basic types: basic, algebraic equations, word problems, graphs or shapes. Knowing the rules and tricks…

A rectangle is a geometric figure in which all four angles are 90 degrees. So if you have a missing side and it is a true rectangle, then you know the missing angle is 90 degrees. However, you could…

Amusement parks are beloved by patrons of all ages, especially youth. If you are planning a family vacation or class field trip to an amusement park or have just taken such a trip, activate children's…

Polyhedrons are structures that do not have any curved surfaces. Common polyhedra include cubes and pyramids. The physical construction of these structures can be entertaining and educational. A…

In your geometry classes, you will often need to circumscribe triangles into circles. With most triangles, you need to use a protractor and bisect the angles of your triangle in order to find the…

The Great Pyramids of Egypt have so enveloped our imaginations that it is difficult to picture any other shape when someone mentions the word, "pyramid." However, pyramids exist in a variety of…

The Sierpinski triangle is a famous fractal pattern that can be drawn using only a pencil and a ruler. A triangle is subdivided into four triangles, three of which are subdivided into four more…

The beauty of trigonometry is that you can make so much out of so little. For instance, to solve the sides "a" and "b" of an isosceles triangle, all you need to know is the length of the base "c" and…

The constellation Sagittarius can be seen in the summer in the Northern Hemisphere, just above the southern horizon. The prime months to view Sagittarius are June through August and sometimes into…

The symmetric and paired facial features create triangular shapes across the face. Facial rejuvenation and cosmetic physicians, such as Dr. Joseph Hkeik, have labeled four triangles in the face that…

Baseball fans around the world are most likely familiar with the concept of triangles as the layout of the baseball field (diamond) is similar to that of an isosceles triangle. An isosceles triangle…

Similar triangles and congruent triangles both have three angles that are the same measure in regards to the degrees. However, triangles that are congruent also have sides that are the same lengths.…

In Geometry, you will frequently work with triangles. If you take advanced geometry classes, you will work with three special points in triangles: the circumcentre, the orthocentre and the centroid.…

In geometry, students frequently have to work with triangles and other geometrical shapes. If asked to construct a figure with five intersecting triangles, the easiest way to go about it is to draw a…

The diagonals of a rhombus, a parallelogram with four identical sides, bisect one another at 90-degree angles, creating four identical right triangles within the shape. Through Pythagoras' theorem,…

The Pythagorean Theorem is one of the most well-known math formulas, giving us insight to the relationship between angles in a right triangle. Right triangles have one 90-degree angle and the…

Isosceles triangles by definition must possess at least two sides that are equal in length; if all three sides are equal, then the triangle is a special type of isosceles called equilateral. For an…

A line segment is the portion of a line that runs between two specific end points. The line segment includes all possible points that lie between the two end points. Naming a line segment is necessary…

Popsicle stick bridges are a staple of physics classrooms all over the world, with competitions held to determine the bridge design that is able to hold the greatest amount of weight. These bridges…

An isosceles triangle has two equal sides called legs. The third side is the base, and the perpendicular line that connects the base to the point at which the two legs meet is the altitude. The…

Finding the measurement of the third side of a triangle when you know the measurement of the other two sides only works if you have a right triangle or the measurement of at least one other angle.…

A triangle is a commonly encountered geometric object that has three points, or vertices, and three sides. The triangle has been well-studied over the years, with the first formula describing…

Eight-sided polygons, called octagons, are often constructed inside a circle using a compass and a straight edge. The points created by equally spaced diameters create the octagon's vertices, which…

Geometry has several rules that address the properties of triangles. One such rule involves a concept known as the Euler line, named after Leohnhard Euler who discovered in the 18th century that three…

In your early math classes, you will need to learn to graph shapes and equations on the Cartesian axes. When connecting nine points to form a square, the most important thing to know is which one of…

An equilateral triangle has three congruent sides and three congruent angles, each measuring 60 degrees. Mathematicians usually construct them inside a circle, which they draw with a compass. However,…

An isosceles triangle is any triangle where two sides have an equal length. The unequal side is named the base. Also, the base angles of an isosceles triangle are equal. To calculate the sides of the…

Lines that are within matching corners are called corresponding angles. When two lines are crossed by another line, this type of corresponding angle is called the transversal. Corresponding angles may…

A triangle is a basic figure used in Euclidean geometry. A triangle is a two-dimensional figure having three corners or vertices. It is a three-sided polygon having the sum of interior angles equals…

Building towers using uncooked spaghetti and marshmallows as materials is a hands-on, kinetic way for students of all ages to explore applied geometry and structural engineering. Young students can…

Measuring angles is a simple task when you have a protractor. A protractor is a half-circle shaped tool, which contains two sets of degree measure for easy marking, with the center line being 90…

Geometric solids are three-dimensional shapes that have a measurable length, width and height. Rather than appear flat, geometric solids are shapes that could be sculpted and stood upright. Students…

The altitude of a triangle, also known as the height, is the distance from any of the three vertices to the opposite side. Depending on the measurements of the three angles, the altitude can sit…

Pascal's Triangle is a triangular array of whole number elements with many uses in mathematics, including probability and algebra. Each row in the triangle has one more element than the row above it.…

One of the earliest cultivated societies, Sumeria began more than 5,000 years ago. They developed a writing system on clay tablets called tokens. On these tokens, they would create simple images and…

The health triangle is a symbol used in grade schools to teach students about the three basic aspects of overall health. Each side in the triangle represents a different, yet critical aspect of health…

An obtuse triangle has one angle that is more than 90 degrees. Determining how much more than 90 degrees it is and calculating the measurement of the other angles involves trigonometry. To compute all…

One of the first shapes you learn as a child is the triangle. You know it is a shape with three sides and you may associate it with images like arrowheads, pyramids, pizza slices, paper airplanes or…

A triangle is defined as a closed figure with three sides. The length of all three sides of a triangle added together is called the perimeter. You can calculate the perimeter (P) of a triangle using…

"The Greedy Triangle" is a children's story by Marilyn Burns about a triangle who wants more than its three-sided shape. He asks the shapeshifter to add more sides and angles so he becomes a…

In elementary school one of the first things you learn to do is draw shapes. It helps you understand the world around you and apply it. Some of the simple shapes that you learn are circles, squares…

Constructing a perpendicular bisector with a compass requires that you use a compass to identify a line that intersects another line so the two lines make a 90-degree angle. These two lines are said…

A line segment is a subset of a geometric line. Unlike the line, which stretches infinitely in both directions, the line segment has a beginning and an end defined by endpoints. These endpoints are…

A major focus of geometry is the study of angles. Angles are measured in degrees and can range from 0 to 360. A complete circle totals 360 degrees. Angle bisectors are line segments that cut the angle…

Right triangles are the most familiar shapes in geometry and trigonometry. A right triangle, or a triangle that has a 90-degree angle, is the basis for the Pythagorean theorem as well as trigonometric…

Geometric planes are two-dimensional objects that stretch infinitely in all directions. The intersection of multiple planes forms a line, a one-dimensional object that also stretches to infinity.…

Triangles are classified according to their sides or according to their angles. There are many ways of dividing the interior space of a triangle. One of the most interesting is the Sierpinski…

The rules of math cover everything from how to multiply large numbers to the proper way to draw points on a graph. One of those rules include different types of lines. A line with two arrows at each…

The study of angles and angles and triangles is part of geometry, a branch of math. There are three types of angles--right angle, obtuse angle and acute angle--and triangles are named after what type…

Three-sided figures known as triangles can be found in architecture as a roof shape, on the sides of pyramids and in rectangles when you cut them along a diagonal. A triangle is bounded by three…

Numbers and math are pertinent to the understanding of our world. Some people consider math as a nuisance, while others love the challenge of working with numbers. Knowledge of algebra, a branch of…

Ancient armies developed the catapult as a siege weapon during the middle ages. When keeping a town, village or castle under siege, Greek engineers would instruct the soldiers on how to build a Greek…

A triangle is a polygon with three sides that may be equal or unequal. The surface area of a triangle is the total area of the surface within the boundaries of the triangle. Surface area is expressed…

If you are trying to teach your children about calculating area and sides of shapes -- or trying to help them with their homework -- you may come across an area ratio problem. In this type of…

Euclid is the most famous geometrician of all time. An entire field of study, Euclidean Geometry, has been named after this man who lived in Egypt more than 2,300 years ago. Euclid turned his…

Triangles are geometric figures that have three sides and three angles. All of the interior angles of a triangle add up to 180 degrees. Triangles that have an interior angle equal to exactly 90…

Illustrate the concept that all the edges of a cube are equal by cutting 12 drinking straws to the same length and stringing them together to make a cube. Making a cube with string is more difficult…

Trigonometry can take the unknown out of geometry. One place where this is particularly evident is in the analysis of right triangles. Right-angled triangles are characterized by a 90-degree angle. No…

Calculating the area of a triangle is a common mathematical problem encountered by high school students, but it also has many real world applications. Whether you are carpeting a room, tiling a wall…

Triangles and quadrilaterals are the most common geometric shapes where a missing angle measurement needs finding. For equilateral triangles, this is very simple, as all angles and sides are equal, so…

Architectural drawings include everything from blueprints to fine art paintings. Artistic renderings of structures can be beneficial for architects, designers, builders and clients for visualization…

The sum of all the angles of any triangle always equals 180 degrees. No matter what a triangle looks like or how different the length of each side is, the angles always add up to the same number. In…

Geometry is the study of points, lines and objects, and one large part of this discipline is understanding shapes. A rectangle is defined as a four-sided figure that also has four angles. Technically…

Shapes are differentiated by three basic properties: the number of sides, the comparative length of these sides and the interior angles within the shape. A triangle is a shape characterized as always…

A right triangle consists of one 90-degree angle, two shorter sides and a longer, slanted slide called the hypotenuse. The trigonometric functions sine, cosine and tangent are defined based on a right…

The sun has layers and an atmosphere, just like Earth and the other planets. If you are studying the sun in science class, drawing and labeling the sun can help you remember the various terms…

Three sides make up the basic shape of a triangle, but the types of angles that connect the sides together define what kind of triangle it is. Different sized angles are given different names to help…

The term "isosceles triangle" refers to a three-sided shape in which two of the sides have an equal length, while a right triangle is one that has one angle that is exactly 90 degrees. These…

Constructing a perpendicular line segment is one of the basic operations in geometrical construction. Other basic operations include bisecting angles, dividing line segments and duplicating angles.…

Triangles are closed two-dimensional figures that have three sides and three angles. They vary in type depending on the proportion of the sides. When none of the sides is the same, you have a scalene…

After taking an algebra class, many high school students continue on to study geometry, and can be frustrated by the new set of vocabulary and concepts they have to learn. Triangles, in particular,…

If you want to increase or decrease the overall size of a triangle, you can multiply the sides of the shape by a common factor. Two triangles that have corresponding sides that are smaller or greater…

It is easy to calculate an isosceles triangle's perimeter because it is a simple shape. A triangle, also known as a trigon, is a polygon with three interior angles and three sides. Triangles are…

Triangles are three-sided polygons. Similar triangles have equal corresponding angles. The corresponding sides are proportional but have different lengths. You can find the missing sides by forming…

A triangle is a geometrical shape with three sides, at least two of which are of equal length in an isosceles triangle. Isosceles comes from the Greek words iso, meaning same, and skelos, meaning leg.…

Constructing a triangle from the altitudes seems complex, but the information is all there. The altitude of a triangle is the distance from a point that bisects an angle to a point perpendicular to…

Calculating the height of a tower is a very standard trigonometry question in a high school math class. The question is usually set up with a person being a certain distance away from a tower. He…

Triangles are the most stable shape in geometry. This is because, having only three sides, the triangle defines a plane. You find triangles in supports for everything from buildings to bridges. Even…

Triangles in geometry are identified based on the degree measure of their angles and the relative lengths of their sides. Triangles are classified by their angles as acute, right or obtuse, and by…

An angle is the distance, measured in degrees, between two lines that share one endpoint. The exact degree of the angle is measured by a protractor or calculated based on other angles, if using a…

Triangles come in many shapes and sizes. Different categories of triangles, based on lengths of their sides and the measurements of their angles, include equilateral, isosceles, right, right…

A pyramid belongs to a class of three-dimensional objects known as polyhedrons. It has a polygonal base with triangular shapes adjacent to each side. The triangular sides, or faces, of the pyramid…

The hypotenuse is defined for any right triangle, that is, any triangle in which one of the angles is 90 degrees. The hypotenuse is the longest side; it is also the side that is opposite the right…

Symbols and signs can be found all over --- on street corners, in shops, in books, inside cars, on labels and even on clothing. However, while some use the two terms interchangeably, at times they…

A triangle is a geometrical figure that has three sides. Several rules and theorems govern the relationship between the sides, angles and vertices of a triangle. In geometry, the shortest side of a…

In basic algebra, two lines are said to be perpendicular if they intersect each other at right angles. Calculate the slope of a line perpendicular to another line by determining the slope of the…

To determine the center of a triangle you are actually searching for several different measurements. Technically, triangles have four distinct points that could all be classified as the center (except…

In geometry, obtuse triangles are angles, other than right triangles, in which one of the three internal angles is strictly greater than 90 degrees. This is the largest angle, and it is opposite to…

There are two ways to use the properties of a triangle to estimate the height of objects. Which method you use will depend on the information you have available. If you know the distance along the…

Perpendicular lines intersect one another at 90-degree angles. The slope of a line charts its vertical climb or descent over a specified horizontal distance. The slopes of perpendicular lines can be…

Shirley Temple is most known as the curly-haired childhood movie star who dazzled people with tap dancing at an early age and who brought optimism through her movies during the time of the Great…

Adjacent angles are two angles that have a common side and vertex. The vertex is the corner point of the angle. If the sum of two adjacent angles is more or less than, but not exactly, 90 or 180…

Preschoolers learn best by using all their senses. Even children who are too young to draw a square can help you tie four straws into a square. They can count the straws and measure the straws against…

The properties of an isosceles triangle include two sides of equal lengths and two angles with equal measurements, called the base angles. The base of the triangle is the side that is not equal in…

There are a number of ways in which triangles can be divided in order to create three triangles within the original shape. If the simple rules below are followed, an infinite number of triangles can…

While it may look like a simple triangle, trying to figure out Pascal's triangle is not an easy thing for anyone but the most experienced mathematicians to do on the spot. Pascal's triangle is a…

Ask 10 people what makes them healthy and you will likely get 10 different answers. Health refers to the overall well-being of a person, not simply the absence of disease, injury or infirmity. The…

From building aircraft to keeping food safe in the kitchen, aluminum, a highly malleable, low-density metal, has become an essential part of modern life. Aluminum foil is probably one of the thinnest…

Although two similar shapes may be different sizes, they have the same form. All of the corresponding angles in two similar triangles have the same measure and their corresponding sides are…

Triangles are two-dimensional shapes that are characterized by three sides. Whether you are a high school student in geometry class or an architect attempting to outline a building, finding the…

Every triangle has three sides and three angles. It is a closed geometric figure, meaning all sides connect. Classify triangles by comparing the length of their sides, by measuring their angles or by…

The sum of the three angles in a triangle always equals 180 degrees. The triangle may be right, isosceles, acute, obtuse, equilateral or scalene, yet the sum of all the angles is still 180 degrees.…

A right angle is a 90 degree angle that forms where perpendicular 180 degree lines meet or cross. Proving that a polygon such as a square, rectangle or triangle has a right angle requires knowledge of…

Calculating the area of an acute triangle is one of the basic exercises involved in learning geometry. All three angles of an acute triangle are less than or equal to 90 degrees. The acute triangle is…

A perpendicular bisector is a line that cuts a line segment into two equal or congruent parts at right angles. To "bisect" means to cut into two equal parts. "Perpendicular" means to intersect at or…

Geometry is the study of shapes, both two dimensional and three dimensional. A triangle can have three sides of any length as long as each end of each side touches the ends of the two other sides.…

Isosceles triangles consist of two congruent (same size) sides called legs and one side that has a different measure, called the base. The angles formed at where the legs meet the base of the triangle…

The kitchen is a hiding place for a skinny wonder of the metallurgical world: aluminum foil. Aluminum foil wraps your sandwiches and keeps the roast from drying out without you having to understand…

Though the angles of a triangle are located inside of it, they do not have to remain a mystery. A triangle, also called a trigon, is a three-sided polygon. One feature that every triangle shares is…

Any three non-linear points describe a unique circle. The circle that passes through any three points can be drawn using only a straight edge and compass in a process known as construction.…

A perpendicular bisector is not just another "X" that marks the spot. A perpendicular bisector cuts a line segment into two equal lengths. The bisector also creates four right angles at the…

Any object that possesses four straight sides is a quadrilateral. Quadrilaterals are also polygons that are enclosed two-dimensional geometric shapes. Types of quadrilaterals include squares,…

Perpendicular bisectors are perpendicular lines that pass through the midpoint of a line segment. While you can draw a perpendicular bisector simply by using a ruler to determine the midpoint of a…

Twisted Triangle, or Parivitta Trikonasana, begins in a modified Tadasana position, then has you place your feet apart with hipbones facing forward as you bend forward and twist your trunk. Learn the…

In math, a "unit" is what's used to describe what a number means. For example, "feet" is a length descriptor; "pound" is a weight or mass descriptor. "Derived units" are units which result from a…

A rectangular pyramid has a rectangle for a base and triangles for sides which meet at a single point. To determine the volume of this shape, there is a basic formula to follow which applies to all…

A triangle is composed of three sides that intersect to create three angles. The total number of degrees inside of a triangle is 180 degrees, of which each of the triangle's angles is a part. When all…

Pascal's triangle is a difficult concept to grasp at the beginning. At first glance it appears a large diagram filled with random numbers. With a methodical approach and guided activities, students…

Geometric theorems and trigonometric functions govern the circumscribed circle of a triangle. A circumscribed circle goes around the outside of a triangle and touches each of the vertices. You can…

For a triangle to be an isosceles triangle, two of its three sides must be the same length. Because the two equal sides intersect identically with the third side, two of the triangle's angles also…

Calculating the volume of a pyramid is quite simple, provided you are aware of the dimensions. Using the pyramid volume (V) formula, the only thing you have to do is find out the width, length and…

Triangles are a kind of minimum object. Objects with less than three sides are not polygons--they do not enclose space. It is also the only polygon that has generated its own branch of…

The Pascal Triangle is named after the French mathematician Blaise Pascal. The Pascal Triangle is an arrangement of binomial coefficients in a triangular formation. Activities for Pascal's Triangle…

Designing a model of the largest temple at Palenque is an excellent place to start when learning Mayan temples. Using popsicle sticks, glue and other simple craft products can make history come alive…

When installing a culvert into a stream, you cannot impede the natural flow of the stream or the movements of fish and other wildlife. Therefore, it is imperative to properly calculate the required…

A scalene triangle is defined as a three-sided polygon where no two sides are the same length and no two angles are the same measurement. Its name comes from the Greek "skalenos," meaning unequal or…

A scalene triangle is a type of triangle that has no equal sides and no equal angles. It is the black-sheep of the triangle world because there are thousands of shapes and sizes that a scalene…

The area of a triangle can be measured using the measurements given for its height and base. The base of a triangle is the length of the bottom side or leg; the triangle's height is the perpendicular…

The number pattern found in Pascal's triangle has practical applications for expanding polynomials and also provides a good introduction to number patterns in general. The pyramid structure used to…

In geometry or trigonometry courses, part of the curriculum includes measuring the interior angles of triangles. Problems that simulate symmetrical triangles such as a roof's slop employ isosceles…

The altitude of a triangle is essentially the height, measured at a 90-degree angle from one side. Knowing the altitude allows you to calculate the area of the triangle or perform trigonometric…

In kindergarten, teachers are happy for students to know that a triangle is a shape with three sides. As the years go by, students are expected to know about various types of triangles, such as…

You can calculate the volume of any pyramid with a single formula, regardless of the type of pyramid or how many sides it has. The volume of a pyramid is simply one-third the area of the base times…

According to information from the University of Georgia, the orthocenter of a triangle is the point where the three latitudes of the triangle intersect. The orthocenter can be located inside or…

Many people graduate from High School and ask themselves why they studied certain math formulas that are never used in working life. However, some of these formulas are worth remembering and commonly…

The Delta symbol is derived from ancient Greek and used today in mathematics and physics applications. There is an uppercase and lowercase symbol for delta. Both symbols have different meanings. The…

A plane (flat) triangle is a three-sided polygon that has three angles. There are six types of triangles which are identified by characteristics of their sides or angles. For example, an equilateral…

A right-angled triangle always includes a 90-degree angle. An hypotenuse is the longest side in any right-angled triangle. Pythagoras, a Greek philosopher who lived from 580 B.C. to 520 B.C.,…

An obtuse triangle is a triangle that has a single obtuse angle, which is an angle that measures more than 90 degrees and less than 180 degrees. Obtuse triangles, also referred to as oblique…

The altitude of a triangle is a straight line projected from a vertex (corner) of the triangle perpendicular (at a right angle) to the opposite side. The altitude is the shortest distance between the…

The square footage of a triangle is the amount of space in terms of feet that is contained within the perimeter of a triangle. Another way of stating this concept is the "area" of the triangle. You…

Freshwater mussels, a type of mollusk, make freshwater pearls. They are the commercial source of these pearls. China has become the biggest producer in the world, according to Pearl-Guide.com.

An obtuse triangle is a triangle that has three angles, one of which is greater than 90 degrees. The formula for obtuse triangles can be taught in elementary school. As students get older, the…

When looking at a pyramid, think of the vertices as the pointed parts of the pyramid. Therefore, the total number vertices on a pyramid is the number of pointed spots. A triangular pyramid is a…

Sheets of paper bend easily, but you can roll the paper into a tube to make it much stronger. Strong material is not enough to make a freestanding tower; you must also have a stable construction or…

Engineers have worked over the years to develop better, stronger bridges that can hold up enormous amounts of weight. Students can learn about bridges, and differences in strength among the types of…

Math is one subject that many students are not always fond of. There is one important thing to remember about most types of maths: there is normally a specific equation that will help you find your…

Pascal’s triangle is a triangular mathematical pattern that mathematician Blaise Pascal studied. Pascal’s triangle often appears in probability equations. Many patterns exist in the…

Catapults have been used for centuries as a means of tossing stones into barricades and over castle walls. Homemade catapults can be used in the same way to hurl marshmallows over counters, desks,…

Finding the missing internal angle in a triangle is a relatively simple math task that just about anyone can perform. There is a simple equation that you can use to determine the angle accurately…

Although many people think that a pyramid is one distinct shape, there are an infinite number of possible pyramids. After all, the definition of a pyramid is merely a solid figure that has a polygon…

A circumscribed circle, also referred to as a "circumcircle," is a circle containing all three of the vertices of a triangle. The center of a triangle is called a "circumcenter"---also the center of…

Origami is the Japanese art of folding paper into a representational or functional shape. This ancient form of art uses some basic folding techniques to create a variety of objects from toys to…

Calculating the sides of a triangle helps you to determine the perimeter of a triangle even if you only have the measure of two of the angles and one of the sides. To find the sides of the triangle,…

General contractors, carpenters, electricians, plumbers and building inspectors use architectural drawings as an instructional and visual guide. This requires that the architectural drawings you…

Making a measuring scale can help teach the concept of measurement and weight. You can construct a scale by using common household items. Making a scale takes little time and the finished product will…

A triangle's circumcenter exists where the perpendicular bisectors of each of its sides intersect. A perpendicular bisector is a line that passes through the midpoint of a line segment at a 90-degree…

A tepee is the traditional home for Plains Indians. Tribes use either three or four poles for the traditional cone-shaped dwelling. The poles in a four-pole tepee represent the cardinal points and…

Triangles are one of the staples of mathematics, and understanding their function is essential to the comprehension of numerous everyday life phenomena. However, before you can use them, you have to…

To solve basic geometry problems, students must know what a hypotenuse is and how to use it. Without this knowledge, students will find it difficult to solve not only basic geometry problems, but also…

Triangles are everywhere and learning how to measure them is helpful in the everyday world. Use the Pythagorean theorem to measure the height of right triangles. If you have a triangle with all sides…

Pyramids were used by ancient Egyptians to bury pharaohs and other important people. The practice was abandoned after the time of the Old Kingdom. Students can build a wooden pyramid as part of a…

Math can be difficult for many people. Throw in angles, formulas, polygons, degrees, cosines, and it can certainly be a disaster (and seem a lot more like science than math). Finding an angle of a…

Many math classes and standardized tests, such as the ACT and SAT, will require you to find a triangle's angles and sides. Triangles can be categorized as right (having a 90-degree angle) or oblique…

When most people think about Ancient Greece, they picture magnificent temples with stone columns surrounding them. Because of this, a Greek temple model is a wonderful way to teach children about…

You can see the constellation Sagittarius at different times of the year depending on where you are in the world. If you live in the Northern Hemisphere, you can see it during the summer months; if…

If you know the length of two sides of a triangle, how to determine the length of the third side is a well known math fact. The equation is generally attributed to Pythagoras, who lived during the 5th…

High school or college geometry students may be asked to find the lengths of a triangle's sides. Engineers or landscapers may also need to determine the lengths of a triangle's sides. If you know some…

A triangle is a three-sided polygon. Knowing the rules and relationships between the various triangles helps to understand geometry. More importantly, for the high school student and the college-bound…

Every shape has a name and is easily figured out if you know the process. The shape of the object does not matter in its name--only the number of sides that the shape has is important.

Bats are unique mammals that have sparked the imagination of the movie industry, countless fictional works, and an abundant amount of superstition. According to the Smithsonian Institute, "Bats are…

There are times when you need to know the area of a certain surface, including a triangle. A simple equation allows you to determine the square feet or square inches are inside a triangle.

Wind direction is a key indicator in weather patterns. A wind vane is a basic tool to determine wind direction that can be made easily from basic supplies. To teach a child to make an easy wind vane,…

There is something magical about royalty to most children. Little girls dream of being princesses and little boys pretend to be kings. A craft that allows children to use their creativity and fine…

Triangles are classified into three groups based on their angles and sides. Every triangle is either equilateral, scalene or isosceles. In an equilateral triangle, all sides and angles are equal to…

The circumcircle of a triangle is the circle that contains the vertices of the triangle. The circumcenter of a triangle is the center of its circumcircle. All triangles have exactly one circumcircle…

Creating a paper windmill is a fun craft and a great science experiment to illustrate wind or electricity production. It is cheap and easy to make, and it can be made with supplies that are already…

Making a pyramid for school is a fun and easy project. You can make a simple pyramid or you can go into greater detail by drawing pictures on it. Making the pyramid is only part of what you will need…

Does finding the perimeter of a triangle have you in a triangle? If so, I'm here to tell you that it can easily be solved in 3 simple steps! All you'll need is the formula for finding the perimeter,…

A triangle is among the simplest two-dimensional shapes in geometry. All triangles have certain basic properties: They contain three sides and three angles, and the sum of the angles always equals 180…

There are various ways to calculate the area of a triangle if you know side lengths and angle measures. The two most common formulas used to find the area of a triangle require either 3 sides…

The area of a triangle can be calculated if you know the length of two sides and the angle between them. This formula for calculating the area of a triangle uses the sine trig function.

You can compute the area of a triangle knowing the lengths of the sides and the measures of the angles. This article will show you how to calculate the area of a triangle just knowing the length of…

The area of a triangle can be determined by multiplying half of the base by the height, as a triangle is essentially half of a quadrilateral shape. Calculate the area of a triangle with instructions…

A common task in basic geometry is to classify triangles according to the definitions of various terms. Some triangles can be classified by only term, and some triangles fall into two overlapping,…

To teach autistic children to sort shapes, educators often have them match pictures of black and white shapes. This practice reduces the likelihood that a child will play with the shapes or be…

In creating this craft project with little ones, you are also reinforcing the recognition of triangles and circles, which is what this witch is made up of. The skill level of this craft can also be…

The height of a triangle can be found in a few different ways, depending on the type of triangle and the information that is known or measured. Right triangles, which include one angle of 90 degrees,…

Geometry can be one of the most confusing years of math in high school. With all the different shapes, types of angles, and formulas to remember, you may start to feel that you are swimming in a sea…

Similarity is a concept Euclidean geometry uses to describe the commonalities between and consequent properties of two individual shapes. Similar triangles have two things in common: two angles and…

Geometry is a branch of mathematics that deals with the measurement, relation and properties of solids, lines, points and angles. One of the basic shapes in our world is the triangle. Finding the area…