Across
- 3. triangle with a 90 degree angle
- 6. all sides are equal in length and all angles are equal
- 9. triangle with all angles the same and all side lengths the same
- 13. has three sides
- 15. has four sides equal in length but not with equal angles
- 17. triangle with all angles less than 90 degrees
- 19. triangle with all side lengths different in size
- 20. triangle with one angle greater than 90 degrees
Down
- 1. not a shape
- 2. two pairs of parallel lines
- 4. four sides and only two are parallel
- 5. prefix meaning three
- 7. half of a circle
- 8. round shape
- 10. triangle with two equal side lengths
- 11. we also fly this in the sky
- 12. has four sides all equal in length with equal angles
- 14. prefix meaning four
- 16. has eight sides
- 18. prefix meaning five