Geometry symbols

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Across
  1. 4. triangle shapes
  2. 5. line that starts from point A
  3. 6. distance from point X and Y
  4. 10. grads angle unit
  5. 12. "
  6. 13. perpendicular lines
  7. 15. line from point A to point B
Down
  1. 1. formed by two rays
  2. 2. 1 turn
  3. 3. angle unit
  4. 7. arc from point A to point B
  5. 8. equivalence of geometric shape and size
  6. 9. same shapes,not same size
  7. 11. parallel lines
  8. 14. infinite line