Across
- 4. right
- 6. degrees
- 11. triangle
- 14. trapezoid
- 17. rhombus
- 18. rectangle
- 19. shapes
- 20. equilateral
Down
- 1. angles
- 2. hundred
- 3. vertical
- 5. reflex
- 7. vertical
- 8. vertex
- 9. geometry
- 10. angles
- 12. ninety
- 13. zero
- 15. protractor
- 16. measurement