| A | B |
|---|
| radius | the distance halfway across a circle, a line segment that touches the center and edge of the circle |
| diameter | a line segment whose endpoints are on the circle and that touches the center of the circle |
| chord | a line segment whose endpoints are on the circle |
| circumference | the distance around the circle |
| circle | the set of all points in a plane that are a given distance from the center |
| Pi | about 3.14 |
| double | what you do to the radius to get the diameter |
| about triple | what you do to the diameter to get the circumference |
