Geometry Symbols

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Across
  1. 3. C
  2. 6. Infinite line
  3. 7. |X-Y|
  4. 8. Formed by two rays
  5. 10. ( 90° angel )
  6. 14. arc from points A to point B
  7. 15. gradians
Down
  1. 1. ||
  2. 2. constant, π
  3. 4. ∆
  4. 5. degree
  5. 9. 1turn=360°
  6. 11. radians
  7. 12. line that start from point A
  8. 13. '