Geometry Symbols

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Across
  1. 2. radians angle unit / "c"
  2. 6. represented by the symbol "||"
  3. 7. angles are equal to 90° / "⊥"
  4. 9. equals to 90°
  5. 11. infinite line / "↔"
  6. 12. formed by two rays / "∠"
  7. 13. line that start from a point / "→"
  8. 15. same shapes, not same size / "~"
Down
  1. 1. triangle shape / "Δ"
  2. 3. equivalence of geometric shapes and size
  3. 4. represented by the symbol "∡"
  4. 5. line from a point to a point / "-"
  5. 8. represented by the symbol "π"
  6. 10. represented by the symbol "°"
  7. 14. represented by the symbol "|x-y|"