Find me: Geometry symbols

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Across
  1. 2. line from point A to point B
  2. 3. °
  3. 6. turn = 360°
  4. 10. |x-y|
  5. 13. ||
  6. 14. arc from point A to point B
  7. 15. Line that start from point A
Down
  1. 1. ''
  2. 4. angle =90°
  3. 5. ⊥
  4. 7. rad
  5. 8. Infinite line
  6. 9. π
  7. 11. ~
  8. 12. Formed by two ways