| A | B |
|---|
| composite figure | a figure made up of two or more shapes |
| sector | a pie-shaped part of a circle bound by a radius of a circle and an arc |
| central angle | an angle whose vertex at the center of a circle and with sides that intersect the circle |
| circle | a set of all points in a plane that are the same distance from a given point in the plane |
| center | the given point |
| diameter | distance across the circle through the center |
| radius | distance from center to any point on the circle |
| chord | distance between any two points on a circle |
| circumference | distance around the circle |
| pi | ratio of circumference to the diameter is equal to 3.14... |
| base | any side of a parallelogram |
| altitude | a line segment perpendicular to the base with the endpoints on the base and the sides opposite of the base |
