Math Vocabulary I

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Across
  1. 7. ( x, y )
  2. 8. per 100
  3. 9. bh or lw
  4. 12. the middle number of a set of data
  5. 13. distance around a Circle
  6. 15. 90 angle
Down
  1. 1. a ratio w/ a denominator of 1
  2. 2. when two lines intersect at a 90 angle
  3. 3. a number that cannot be expressed as a/b
  4. 4. the difference of the largest and smallest number in a set of data
  5. 5. a method used to add/subtract fractions
  6. 6. two equal ratios
  7. 7. two angles whose sum is 90
  8. 10. top part of a fraction
  9. 11. space a figure covers
  10. 14. name of our number system