Geometry symbols

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Across
  1. 4. infinite line
  2. 6. line from point A to point B
  3. 8. arc from point A to point B
  4. 12. =90deg
  5. 13. triangle shapes
  6. 14. arcsecond, 1=60
  7. 15. line that starts from point A
Down
  1. 1. perpendicular lines(90 angle)
  2. 2. Formed by two rays
  3. 3. distance between x and y
  4. 5. 1turn=360deg
  5. 7. same shapes not same size
  6. 9. equivalence of geometric shapes and size
  7. 10. parallel lines
  8. 11. arcminute,1=60