Geometry Symbols

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Across
  1. 4. radians angle unit
  2. 5. equivalence of geometric shapes and size
  3. 7. grads angle unit
  4. 11. infinite line
  5. 12. it is the angle between two intersecting arcs of great circles on a sphere
  6. 13. a straight line that makes an angle of 90° with another line
  7. 14. arc from point A to point B
  8. 15. π = 3.141592654...
Down
  1. 1. °
  2. 2. an angle measuring exactly 90°
  3. 3. ″
  4. 6. ∥
  5. 8. ∠
  6. 9. distance between points x and y
  7. 10. same shapes, not same size