Across
- 2. grad
- 5. arc from point A to point B
- 7. rad
- 8. line that start from point A
- 9. formed by two rays
- 10. arcsecond,1'=60''
- 14. line from point A to point B
- 15. arcminute,1 degree=60'
Down
- 1. same shapes not same size
- 3. 90 degree
- 4. equivalence of geometric shapes and size
- 6. triangle shape
- 11. infinite line
- 12. parallel lines
- 13. 1 turn=360 degree