Mathsmagic crossword puzzle by Snigdha Banerjee

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Across
  1. 1. integer only divisible by itself or 1
  2. 4. result of division
  3. 6. straight line connecting 2 points on surface of circle
  4. 9. one half of a circle
  5. 10. number not divisible by 2
  6. 11. number that succeeds another number
Down
  1. 2. parallelogram having 4 right angles
  2. 3. the inverse of multiplication
  3. 5. the dividend of a fraction
  4. 7. 3 sided polygon
  5. 8. number that precedes another number