Construction math

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Across
  1. 2. an angle that measures 90 degrees
  2. 4. what is one half the diameter of a circle
  3. 5. what is length times width
  4. 6. the name of the bottom number in a fraction
  5. 8. 32 degrees Fahrenheit
  6. 12. what is 16/16
  7. 13. a wall that carries the weight of the roof
  8. 14. 212 degrees Fahrenheit
  9. 15. a part of a number
Down
  1. 1. a vertical support inside the wall
  2. 3. the name of the top number of a fraction
  3. 7. what is the distance around a circle
  4. 8. portion of a whole number
  5. 9. an angle that measures 50 degrees
  6. 10. what is length times width times height called
  7. 11. the numbers 1, 3, 5, 7, and 9 represent what kind of numbers