Geometry crossword

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Across
  1. 1. alone
  2. 5. another type of math
  3. 8. value of a real number x is the non-negative value of x without regard to its sign
  4. 9. used to measure shapes
  5. 11. a point in an angle
  6. 12. a type of math
  7. 13. a common shape
  8. 14. something to measure with
Down
  1. 2. the bottom number in a fraction
  2. 3. the lines on a coordinate plane
  3. 4. point origins
  4. 5. a 3-D shape
  5. 6. to a plane curve at a given point
  6. 7. the small number used in math
  7. 10. used in math