Geometry symbols

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Across
  1. 1. ≅
  2. 3. distance between points x and y
  3. 6. g
  4. 8. arc from point A to point B
  5. 9. parallel lines
  6. 11. Δ
  7. 13. rad
  8. 14. ′
Down
  1. 2. ∟
  2. 3. ″
  3. 4. π
  4. 5. °
  5. 7. ~
  6. 10. ∠
  7. 12. infinite line