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