A Math crossword puzzle

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Across
  1. 2. the seconed word in the name of a very popular amusement park
  2. 4. a variety of points
  3. 7. a quantity that is not a whole number
  4. 8. what your icecream goes in
  5. 9. an amount that tells you how many times to multiply that number by itself
  6. 12. two lines that never meet
  7. 14. a 3-dimensional completely round shape
  8. 15. the shape of a pillar
  9. 16. a 3-D shape with two identical shapes facing eachother
  10. 17. the space between two intersecting lines
  11. 18. slope intercept form
Down
  1. 1. a number that can be evenly divided between 1 and itself
  2. 2. a^2+b^2=c^2 theorem name
  3. 3. turning an object
  4. 5. a 3-dimensional shape built of squares
  5. 6. rise/run
  6. 10. as seen in a mirror
  7. 11. the 3-dimensional space within a boundary
  8. 13. a narrow mark/band
  9. 17. the actual magnitude of a number