vocabulary review

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Across
  1. 2. order does not matter when multiplying or adding
  2. 6. an angle measuring less than 90 degrees
  3. 8. the distance from zero
  4. 9. a letter standing for an unknown value
  5. 10. a comparison between two quantities
  6. 11. a set of rules for solving expressions and equations
  7. 13. A=1/2bh
  8. 14. whole numbers, decimals, and fractions
  9. 15. a four sided regular polygon
Down
  1. 1. a number the same distance from zero in the opposite direction
  2. 3. a ratio with a quantity being one
  3. 4. exchanging a variable for a number
  4. 5. A=bh
  5. 7. an angle measuring more than 90 degrees
  6. 12. the sum of all areas in a figure