math crosswrod puzzle

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Across
  1. 5. to a addition problem
  2. 6. tenth, hundreth
  3. 7. 2+3=5
  4. 9. line that passes through a circle
  5. 11. both sides are the same
  6. 15. no sides are the same
  7. 16. surface piece of land
  8. 17. answer to a division problem
  9. 18. closing boundary of a circle
  10. 21. space between two intersecting lines
  11. 22. straight figure
Down
  1. 1. line that passes half way through a circle
  2. 2. all sides the same
  3. 3. not a whole number
  4. 4. answer to a multiplication problem
  5. 8. angle more than 90º
  6. 10. 4÷2=2
  7. 12. adding constantly
  8. 13. line segment
  9. 14. way of measurement
  10. 16. less than 90º
  11. 19. number that is not a fraction
  12. 20. subject