Across
- 2. perpendicular lines(90°angle)
- 4. grads angle unit
- 6. parallel lines
- 8. same shapes, not same size
- 9. 1 turn=360deg
- 10. line that start from point A
- 12. prime arcsecond, 1'=60"
- 14. segment line from point A to point B
Down
- 1. to equivalence of geometric shapes and size
- 3. formed by two rays
- 5. triangle shape
- 6. arcminute, 1°=60'
- 7. distance between points x and y
- 11. radians angle unit
- 13. infinite line