axis |
An imaginary straight line used to describe the location of an object. Two or more axes are perpendicular to one another. |
circle |
A figure formed by the group of points that are an equal distance from a shared point, or center. |
cosine |
In a right triangle, the ratio of the length of the side adjacent to the angle divided by the hypotenuse. |
diameter |
The distance from one edge of the circle to the opposite edge that passes through the center. |
hypotenuse |
In a right triangle, the side located opposite the right angle. |
perpendicular |
Forming right angles at the intersection of two lines. |
Pythagorean Theorem |
A mathematical rule describing how the sides of a right triangle are related. The sum of the square of both sides equals the square of the hypotenuse. |
radius |
The distance from the center of a circle to a point on its circumference. |
right triangle |
A triangle containing one angle that measures exactly 90 degrees. |
sine |
In a right triangle, the ratio of the length of the side opposite the angle divided by the hypotenuse. |
tangent |
In a right triangle, the ratio of the length of the side opposite the angle divided by the adjacent side. |
triangle |
A three-sided figure determined by connecting three points that do not share the same line. |
trigonometric ratio |
A ratio that describes a relationship between a side and angle of a triangle. |
trigonometry |
The branch of mathematics that addresses the measurements and relationships of a triangle and its parts. |