Across
- 3. angle =90°
- 4. arcminute
- 9. perpendicular line(90°)
- 10. triangle shape
- 11. grads angle unit
- 14. line that start from point A
- 15. infinite line
Down
- 1. arcsecond
- 2. ~
- 5. rad
- 6. 1turn=360°
- 7. equivalence of geometric and shapes and size
- 8. parallel lines
- 12. distance between points x and y
- 13. formed by two rays