Across
- 3. same plane
- 5. point that bisects a segment
- 8. distance from zero
- 9. angles forming a line
- 10. 2 angles that add up to 180 degrees
- 11. 3 noncollinear points connected by segments
- 12. all sides are equal
- 16. the common endpoint in an angle
- 17. smaller than 90 degrees but not negative
- 18. same line
- 19. 180 degrees
Down
- 1. two rays with a common endpoint
- 2. rate of change
- 3. having the same measure
- 4. greater than 90 degrees
- 6. 2 angles that add up to 90 degrees
- 7. 90 degrees
- 13. extends in opposite directions without end
- 14. all angles are equal
- 15. two endpoints and all the points between