Math crossoword

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Across
  1. 4. identical in form
  2. 7. each of four quarters of a circle
  3. 9. a straight line from the center of a circle to the circumference
  4. 11. area but with 3-d shapes
  5. 12. A straight line through the middle of the circle
  6. 13. a flying object
  7. 15. the # by which a shape's size is changed
  8. 19. moving something across the x/y axis
  9. 22. big angle
  10. 25. an equation
  11. 26. a numerical or constant quantity
  12. 27. the length or width of something
  13. 28. a whole number
Down
  1. 1. moving something in a circular motion
  2. 2. a result of a mathematical equation
  3. 3. another term for factorize
  4. 5. lots of tiny squares
  5. 6. a result obtained by dividing
  6. 8. the angle at which a line goes up or down
  7. 10. a rate for one of something
  8. 13. part of a whole
  9. 14. the part of math that uses letters
  10. 16. small angle
  11. 17. the space inside of a shape
  12. 18. the outside of a circle
  13. 20. the area covering the outside of a figure
  14. 21. a fixed reference line for the measurements of coordinates
  15. 23. a number of things
  16. 24. a word representing a letter