Math day crossword

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Across
  1. 3. quadrilateral
  2. 5. algebra
  3. 6. mathematics
  4. 9. geometry
  5. 10. division
Down
  1. 1. khwarizmi
  2. 2. jabir bin hayyan
  3. 4. math
  4. 7. addition
  5. 8. scalene