Across
- 4. A segment joining two non-consecutive verticles of a polygon
- 6. A statement that can be proved
- 8. A polygon that is bothequiangular and equilateral
- 10. A quadrilateral with four right angles
- 11. A quadrilateral with four congruent sides
- 12. A statement that contains the words "if and only if"
- 14. The set of all points
- 17. A line that intersects two or more coplanar lines in different points
- 18. lines Two lines that intersect to form right angles
Down
- 1. A quadrilateral with both pairs of opposite sides parallel
- 2. A chord that contains the center of a circle
- 3. A quadrilateral with four right angles and four congruent sides
- 5. A 4-sided polygon
- 7. A 8-sided polygon
- 9. An angle with measure between 90 and 180
- 13. A 10-sided polygon
- 14. lines Lines that are not coplanar
- 15. A angle with measure between 0 and 90
- 16. A segment whose endpoints lie on a circle
- 19. The set of points in a plane that are a given distance from a given point in the plane. The given point is the center, and the given point is the radius
