Amiri's math crossword

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Across
  1. 3. The answer to a multiplication sum
  2. 4. Half of the diameter
  3. 6. Triangle with 3 equal sides
  4. 7. A 2D shape with five sides
  5. 8. What you're doing right now
  6. 10. What you call any numbr divided by 0
Down
  1. 1. The opposite of a prime number
  2. 2. The opposite of division
  3. 5. What is the number being divided
  4. 9. The number that appears most in a number range