Across
- 5. A statement that can be proved.
- 7. An angle with measure between 0 and 90.
- 8. A quadrilateral with four right angles.
- 11. A statement that is accepted without proof.
- 14. A 4-sided polygon.
- 17. Two lines that intersect to form right angles.
- 19. A 10-sided polygon.
- 20. Two angles in a plane that have a common vertex and a common side but no common interior points.
Down
- 1. The figure formed by three segments joining three non-collinear points.
- 2. The perpendicular segment from a vertex to the line containing the opposite side.
- 3. A quadrilateral with four right angles and four congruent sides.
- 4. A chord that contains the center of a circle.
- 6. An 8-sided polygon.
- 9. The set of points in a plane that are a given distance from a given point in the plane.
- 10. A segment joining two non-consecutive vertices of a polygon.
- 12. Lines that are not coplanar.
- 13. A 5-sided polygon.
- 15. A figure formed by two rays that have the same endpoint.
- 16. The set of all points.
- 18. A quadrilateral with four congruent sides.
