Across
- 3. A 4-sided polygon.
- 5. A statement that can be proved.
- 6. A segment joining two non-consecutive vertices of a polygon.
- 7. A figure formed by two rays that have the same endpoint.
- 8. A statement that is accepted without proof.
- 10. A triangle with at least two sides congruent.
- 12. An angle with measure between 0 and 90.
- 13. An angle with measure between 90 and 180.
- 16. A polygon that is both equiangular and equilateral.
- 18. An 8-sided polygon.
- 19. A triangle with all angles congruent.
- 20. A quadrilateral with four congruent sides.
Down
- 1. Two angles whose sides form two pairs of opposite rays.
- 2. A statement that contains the words "if and inly if."
- 4. A 10-sided polygon.
- 9. Lines that are not coplanar.
- 11. A 5-sided polygon.
- 14. A segment whose endpoints lie on a circle.
- 15. The set of all points.
- 17. A quadrilateral with both pairs of opposite sides parallel.