GEOMETRY SYMBOLS

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Across
  1. 4. lines (90° angle)
  2. 7. same shapes, not same size
  3. 10. line that start from point A
  4. 11. ∥
  5. 13. double prime
  6. 14. infinite line
  7. 15. equivalence of geometric shapes and size
Down
  1. 1. formed by two rays
  2. 2. grads angle unit
  3. 3. arcminute, 1° = 60′
  4. 5. |x-y|
  5. 6. from point A to point B
  6. 7. triangle
  7. 8. shape
  8. 9. 1 turn = 360°
  9. 12. angle unit