math circles

2. Two endpoints on a circle and all of the points on the circle between those two endpoints.
5. The same distance. Objects can be equidistant from one another.
6. with one endpoint at the center of a circle and the other endpoint on the circle.
7. A polygon whose vertices intersect with a circle.
11. A 180 degree arc.
13. Circles that share a center.
15. A segment whose endpoints are on a circle.
16. A line that intersects with a circle at only one point (the point of tangency).
17. The point of intersection between a circle and its tangent line or tangent segment.
18. A region inside a circle bounded by a central angle and the minor arc whose endpoints intersect with the rays that compose the central angle.

1. A polygon whose segments are tangent to a circle.
3. An arc greater than 180 degrees.
4. A chord that intersects with the center of a circle.
8. A geometric figure composed of points that are equidistant from a given point.
9. The region within a circle bounded by a chord of that circle and the minor arc whose endpoints are the same as those of the chord.
10. An arc less than 180 degrees.
12. The point from which all points on a circle are equidistant.
14. An angle whose vertex is the center of a circle.
19. A segment with one endpoint at the point of tangency of a circle and the other endpoint on the tangent line.
20. A line that intersects with a circle at two points.