Across
- 2. denoted by symbol rad
- 4. arcsecond
- 7. line that start from point A
- 9. |x-y|
- 10. arcminute
- 12. line from point A to point B
- 13. the most common unit for measuring angle
- 14. Δ
- 15. ≅
Down
- 1. ⌢
- 3. formed by two rays
- 5. line that doesn't intersect
- 6. grads angle unit
- 8. ~
- 11. angle measure 90°