Across
- 4. deg
- 5. ∠, formed by two rays
- 7. π = 3.141592654..
- 10. ′
- 11. Δ
- 14. equivalence of geometric shapes and size
- 15. ∥
Down
- 1. line from point A to point B
- 2. radians
- 3. ∟ = 90°
- 6. same shapes, not same size
- 8. infinite line
- 9. gradians
- 12. line that start from point A
- 13. ″