Across
- 1. ⊥
- 6. 1 turn = 360°
- 7. ∥
- 11. grads angle unit
- 12. arcminute, 1° = 60′
- 13. triangle shape
- 14. line that start from point A
- 15. distance between points x and y
Down
- 2. = 90°
- 3. ≅
- 4. infinite line
- 5. rad
- 8. formed by two rays
- 9. same shapes, not same size
- 10. arc from point A to point B