math terms

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Across
  1. 3. +
  2. 6. sections on a coordinate plane
  3. 8. 2+5-4x6^4 3 words
  4. 11. y=x+b
  5. 12. distance from zero 2 words
  6. 13. x
  7. 16. distance across the circle
  8. 17. circumference of a circle
  9. 18. 3:4 or, 3 to 4 or, 3/4
  10. 19. -
  11. 20. area inside of a 3d object
Down
  1. 1. ÷
  2. 2. distance around an object
  3. 4. a machine for calculating math problems
  4. 5. chance of something happening
  5. 7. distance to the middle of a circle
  6. 9. 2^4
  7. 10. Grouping, Exponents, Multiplication and adding, Subtracting and division
  8. 14. y=mx
  9. 15. distance in an object you would use square feet