Across
- 1. line that start from point A
- 6. infinite line
- 7. Δ
- 8. = 90°
- 10. deg
- 12. arcsecond, 1′ = 60″ (″)
- 13. |x-y|
- 14. π = 3.141592654...
Down
- 2. formed by two rays (∠)
- 3. line from point A to point B
- 4. perpendicular lines (90° angle)(⊥)
- 5. same shapes, not same size
- 9. arc from point A to point B
- 11. radians angle unit
- 15. equivalence of geometric shapes and size