K-12 Videos

It is important when learning geometry to understand the definitions. Learn geometry with tips from an assistant mathematics professor in this free video on mathematics.

Practical uses of geometry include designing skyscrapers or airplanes. Find out more practical uses of geometry with tips from an assistant mathematics professor in this free video on mathematics.

Careers that use geometry include aeronautical engineering and mathematics. Learn more about careers that use geometry with tips from an assistant mathematics professor in this free video on...

Visual aids and drawing pictures are helpful in teaching geometry. Discover helpful ways to teach geometry with tips from an assistant mathematics professor in this free video on mathematics.

Converting degrees to radians in geometry comes down to multiplying by an appropriate conversion factor. Convert degrees to radiants with tips from an assistant mathematics professor in this free...

The time line of math history is extensive, as geometry has been found to exist in ancient cultures. Learn about the Babylonians use of math, as well as that of other cultures, with help from a...

Before solving geometry proofs, it can be helpful to go over theorems and postulates as much as possible. Find out how to learn the properties of lines, angles and triangles with help from a math...

Geometry can be a tricky subject, but being familiar with as many geometric shapes, theorems, formulas, postulates and characteristics as possible will greatly improve the understanding of the...

To study for a math test, review as much homework as possible, be familiar with the terminology and do a self test out of a text book to practice solving math problems. Study for a math test...

Angles are used in everyday life by construction workers, surgeons, athletes and military personnel, as each of these careers require familiarity with precise angles and geometry. Find out how...

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...

Finding the area of geometric shapes requires being familiar with their respective formulas, as each type of shape involves different methods and equations. Determine the area of various geometric...

To find the volume of an object in cubic feet, multiply the height, the length and the width together and convert the resulting value into feet if necessary. Determine the volume of an object with...

To measure the area of a given shape, a general rule of thumb is to multiply the length by the width and use square units to express the resulting value. Measure the area of any shape or space...

To calculate the area of a circle, multiply the number pi, which is approximately 3.14, by the squared radius. Determine the area of a circle, which will always be an approximation, with...

The quadratic formula is one of the most fundamental formulas in mathematics, and it is expressed as X equals negative B plus or minus the square root of B squared minus four AC over two A....

Calculating the perimeter of a circle, which is known as the circumference, can be done by multiplying the number pi by two times the radius. Find the circumference of a circle given either the...

The Pythagorean theorem is a formula used to solve side lengths of a right triangle, and it is expressed as A squared plus B squared equals C squared. Identify the different components of the...

The volume of a cylinder can be calculated by using the formula for the area of a circle multiplied by the height of the cylinder, expressed as pi R squared H. Calculate the volume of a...

Calculating the slope of a line will result in either a positive number, a negative number, zero or an undefined value, and the slope is always represented with the letter M. Determine the slope...

Trigonometry was invented by the Ancient Egyptians and Babylonians, who all worked with triangles, and it developed over time through the Greeks and the Indians. Hear a brief history of...

The history of Pascal's triangle begins with the Indians and the Persians who first started working on this pattern of numbers, and it developed through China in the 13th century hundreds of years...

In math, a factor is a term that is a part of another term when multiplied, so the number one is a factor for all existing numbers. Understand factors as they relate to math with instructions from...

The definition of an axis in math is a number line that implies motion through positive numbers, negative numbers and zero as mapped on a graph. Define an axis, such as an x-axis and a y-axis,...

Factoring a parabola requires creating polynomials in the equation if there are none. Factor out a parabola to get the vertex value with instructions from a college-level math teacher in this free...

The meaning of the word congruent is very similar to being equal, and it is often used in geometry in reference to side lengths and angle degrees. Understand the meaning of congruency with...

The invention of geometry is unclear, but the Mesopotamian people and the Ancient Egyptians recorded geometry as early as 3000 B.C. Understand the history of geometry with instructions from a...