Across
- 3. perpendicular lines(90° angle)
- 5. arc from point A to point B
- 6. line from point A to point B
- 8. π
- 10. =90°
- 12. parallel lines
- 13. triangle shape
- 15. distance between points x and y
Down
- 1. equivalence of geometric shapes and size
- 2. radians angle unit
- 4. line that start from point A
- 7. same shapes, not same size
- 9. formed by two rays
- 11. 1 turn=360deg
- 14. infinite line