Across
- 1. forms right angles
- 3. part of line
- 6. two equal sides
- 7. angle with specific parts
- 11. three equal angles
- 12. less than 90
- 13. endless collection of points
Down
- 2. three equal sides
- 4. starting and ending point
- 5. three different sides
- 8. between 90 and 180
- 9. same slope
- 10. exactly 90