Across
- 4. Points all in one plane.
- 10. An example used to prove that an if-then statement is false.
- 12. A segment whose endpoints lie on a circle.
- 13. A quadrilateral with four right angles and four congruent sides.
- 15. A statement that is accepted without proof.
- 17. A statement that can be proved.
- 19. Points all in one line.
- 20. The figure formed by three segments joining three noncollinear points.
Down
- 1. Angles Two angles whose sides form two pairs of opposite rays.
- 2. A four-sided polygon.
- 3. A line that intersects two or more coplanar lines in different points.
- 5. A 10-sided polygon.
- 6. lines Lines that are not coplanar.
- 7. A quadrilateral with both pairs of opposite sides parallel.
- 8. The set of all points.
- 9. A figure formed by two rays that have the same endpoint.
- 11. The point that divides the segment into two congruent segments.
- 14. Angle An angle with measure between 0 and 90.
- 16. A statement that can be proved easily by applying the theorem.
- 18. The set of points in a plane that are a given distance from a given point in the plane.