Across
- 3. two angles that lie in the same plane
- 5. examples: polygons and circles
- 12. a location
- 14. the middle of two endpoints
- 16. two angles' sum equal 180 degrees
- 17. a boundless, three-dimensional set of all points
- 18. a segment line that intersects a segment at its midpoint
- 19. a common endpoint
- 20. 12-sided polygon
Down
- 1. creating geometric figures without a measuring tool
- 2. can be measured due to endpoints
- 4. examples: point, line, and plane
- 6. a closed figure whose sides are all segments
- 7. two angles' sum equal 90 degrees
- 8. when segments have the same measure
- 9. all sides and angles are congruent
- 10. made up of points and has no thickness or width
- 11. ratio of the absolute error to the actual measure
- 13. lines that form right angles
- 15. part of a line