Geometry Symbols

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Across
  1. 1. line that start from point A
  2. 2. π
  3. 5. ∠
  4. 6. radians angle unit
  5. 7. ∥
  6. 8. °
  7. 9. line from point A to point B
  8. 11. ≅
  9. 12. "
  10. 13. |x-y|
Down
  1. 1. ∟
  2. 2. ′
  3. 3. Δ
  4. 4. ⊥
  5. 10. same shapes, not same size