Across
- 2. ″
- 4. line that start from point A
- 5. example AB ∥ CD
- 7. infinite line
- 8. formed by two rays
- 10. c
- 11. π
- 12. example α = 60°
- 14. ′
- 15. example | x-y | = 5
Down
- 1. equivalence of geometric shapes and size
- 3. ~
- 6. line from point A to point B
- 9. Δ
- 13. arc from point A to point B