Across
- 4. the infinite line
- 5. the formed by two Ray's
- 7. the symbol of radians
- 8. the symbol name of =90°
- 10. the arcminute, 1°=60'
- 12. the symbol is ~
- 14. the symbol is ||
- 15. the arc from point A to point B
Down
- 1. the triangle shape
- 2. the perpendicular lines (90° angle)
- 3. the symbol is °
- 6. the symbol of gradiands/gons
- 9. the symbol is |x-y|
- 11. the radians angle unit
- 13. the line that start from point A