Across
- 2. radians angle unit
- 6. π = 3.141592654
- 8. equivalence of geometric shapes and size
- 9. arcminute, 1° = 60'
- 10. parallel lines
- 13. arcsecond, 1° = 60"
- 14. that start from point A
Down
- 1. grad angle by unit
- 2. =90°
- 3. from point A to B
- 4. perpendicular lines (90° angle)
- 5. distance between points x and y
- 7. 1 turn = 360°
- 11. form by two rays
- 12. same shape, not same size