Across
- 5. angles: either of two angles whose sum is 90 degrees
- 8. a flat surface on which a straight line joining any two points on it would wholly lie
- 9. property of congruence
- 11. series of points that extends in two opposite directions without end
- 12. in the same plane
- 14. angle: smaller angle, less than 90 degrees
- 15. the set of all points
- 16. property of equality
- 18. angles: more than 90° and less than 180°
Down
- 1. angles: either of two angles whose sum is 180 degrees
- 2. a location in space, has no size
- 3. lines: coplanar lines that do not intersect
- 4. conclusion you reach by using inductive reasoning
- 6. angle: 90 degrees
- 7. angles: each of the pairs of opposite angles made by two intersecting lines
- 10. characterized by or exhibiting symmetry
- 12. angles: exactly equal in size and shape
- 13. accepted statement of fact
- 17. lines: noncoplanar--are not parallel and do not intersect