Maths crossword

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Across
  1. 2. Squashed square
  2. 5. 10 to the power of a google
  3. 8. Four sided shape
  4. 11. The number where Celcius and Farenhiet are the same
  5. 13. A shape
  6. 14. The first 2 digit number
  7. 15. 90 degrees
  8. 17. Three squared
  9. 18. A quadrilateral with two sides the same
  10. 19. Making a number bigger
Down
  1. 1. Times
  2. 3. The square root of 10000
  3. 4. Making a number smaller
  4. 6. A triangle with no equal sides
  5. 7. 1,1,2,3,5,8 and 13 are all ________ numbers
  6. 9. 5 squared
  7. 10. the number in the middle of all numbers
  8. 11. Numbers less than 0 are called ______ numbers
  9. 12. The third prime number
  10. 13. Has a total interior angle of 520 degrees
  11. 16. the biggest number
  12. 19. The use of letters in place of numbers