Geometry Symbols

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Across
  1. 4. deg
  2. 5. ∠, formed by two rays
  3. 7. π = 3.141592654..
  4. 10. ′
  5. 11. Δ
  6. 14. equivalence of geometric shapes and size
  7. 15. ∥
Down
  1. 1. line from point A to point B
  2. 2. radians
  3. 3. ∟ = 90°
  4. 6. same shapes, not same size
  5. 8. infinite line
  6. 9. gradians
  7. 12. line that start from point A
  8. 13. ″