Geometry Crossword

1. The set of points in a plane that are a given distance from a given point in the plane.
4. A quadrilateral with four right angles.
8. A statement that contains the words "if and only if."
9. A 10-sided polygon.
13. Circles that lie in the same plane and have the same center.
14. A figure formed by two rays that have the same endpoint.
15. The set of all points.
16. A chord that contains the center of a circle.
19. A polygon that is both equiangular and equilateral.

1. A segment whose endpoints lie on a circle.
2. The perpendicular segment from a vertex to the line containing the opposite side.
3. An angle with measure 90.
5. Two angles in a plane that have a common vertex and a common side but no common interior points.
6. An 8-sided polygon.
7. An example used to prove that an if-then statement is false.
10. An angle with measure between 0 and 90.
11. Lines that are not coplanar.
12. An angle with measure between 90 and 180.
17. A segment joining two non-consecutive vertices of a polygon.
18. A quadrilateral with four congruent sides.