math crossword

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Across
  1. 7. lines that never intersect (space=_)
  2. 9. y=a(x-r)(x-r)(spaces are _!)
  3. 11. a angle greater than 90 degrees less than 180
  4. 12. a form of math commonly associated with variables
  5. 15. a number below zero (spaces are _)
  6. 17. the 2d space a object takes up
  7. 18. to cross a line
  8. 20. circumference over diameter
  9. 21. a angle less than 90 degrees
  10. 25. y=ax^2+bx+c (spaces are underscores!)
  11. 27. lines that cross once (space=_)
  12. 28. taking a number out of another number
  13. 29. the main vertical line on a graph
  14. 30. a line hitting only one point of a circle (space=_)
Down
  1. 1. putting two numbers together
  2. 2. this math term is shown as a x most of the time
  3. 3. a plane with boxes that repeats
  4. 4. the main horizontal line on a graph
  5. 5. the area a 3d object takes up
  6. 6. y=a(x-h)^2+k (spaces are _!)
  7. 8. finish a equation
  8. 10. the length of all sides added up
  9. 13. a equation that has everything over 2*a (spaces as _!)
  10. 14. %
  11. 16. repeated addition
  12. 19. repeated subtraction
  13. 22. a form to show less than one but it can be used to show greater than one but it gets called a improper fraction
  14. 23. a form of math commonly associated with shapes
  15. 24. what this crossword is about
  16. 26. a angle that is 90 degrees