Geometry Symbol

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Across
  1. 2. perpendicular lines(90°angle)
  2. 4. grads angle unit
  3. 6. parallel lines
  4. 8. same shapes, not same size
  5. 9. 1 turn=360deg
  6. 10. line that start from point A
  7. 12. prime arcsecond, 1'=60"
  8. 14. segment line from point A to point B
Down
  1. 1. to equivalence of geometric shapes and size
  2. 3. formed by two rays
  3. 5. triangle shape
  4. 6. arcminute, 1°=60'
  5. 7. distance between points x and y
  6. 11. radians angle unit
  7. 13. infinite line