Across
- 3. don't share a common side
- 4. angles add up to 90 degrees
- 6. 360 degrees
- 7. angles add up to 180 degrees
- 9. is exactly 180 degrees
Down
- 1. is less than 90 degrees
- 2. more than 90 degrees
- 5. share a common vertex
- 8. exactly 90 degrees
- 10. greater than 180 degrees