'A' 'B' 'C' Math Words

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Across
  1. 3. how much a container can hold
  2. 4. created by 2 rays joined at a vertex
  3. 8. making sure the answer is correct
  4. 9. distance around a circle
  5. 10. type of math that uses variables
  6. 12. space inside a 2D shape
  7. 13. cut a shape into 2 equal parts
Down
  1. 1. description of numerical data
  2. 2. next to
  3. 4. an angle less than 90 degrees
  4. 5. figure out the answer
  5. 6. 1 of the lines that form a graph's framework
  6. 7. made by all points equidistant from a fixed point
  7. 8. the point in the middle
  8. 11. joining two or more numbers to make larger