Across
- 2. segment line from point A to point B
- 4. formed by two rays
- 5. triangle shape
- 6. to equivalence of geometric shapes and size
- 9. ⊥
- 11. prime α = 60°59′59″
- 13. angle AOB = 30°
- 15. angle ∟
- 16. angle ABC = 30°
Down
- 1. |x-y|
- 3. 1 turn = 360deg
- 4. arc from point A to point B
- 7. ∆ABC~ ∆XYZ
- 8. line that start from point A
- 9. constant 3.141592654...
- 10. grads angle unit
- 12. arcminute, 1° = 60′
- 14. infinite line
- 15. rad