Geometry Symbols

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Across
  1. 3. equals sign
  2. 5. horizontal line
  3. 7. exponent
  4. 8. decimal separator
  5. 10. []
  6. 12. x
  7. 15. ppt; per-
  8. 16. *
  9. 17. ppm; per-
  10. 19. minus sign
Down
  1. 1. plus sign
  2. 2. power
  3. 4. ≈
  4. 6. greater than or less than
  5. 9. /
  6. 10. ppb; per-
  7. 11. %
  8. 13. ÷
  9. 14. calculate expression inside first
  10. 18. mod