Tiphaine and Louna

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Across
  1. 5. less than zero
  2. 6. the opposite of addition
  3. 7. used to count
  4. 9. the result of a division
  5. 10. mathematics whith shapes
Down
  1. 1. the opposite of division
  2. 2. a theorem
  3. 3. result of a multiplication
  4. 4. part of a line
  5. 8. the result of adding two numbers together