Algebra

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Across
  1. 2. 1/360th of a circle
  2. 5. the point (0,0)
  3. 7. 2 angles that add up to 180 degrees
  4. 9. the name for the line y=0 (2 words)
  5. 11. the locus of points equidistant from a central point
Down
  1. 1. a line with a slope of zero
  2. 3. the average of a set of numbers
  3. 4. the ratio of the opposite side to the adjacent side
  4. 6. a line that has no slope
  5. 7. average rate of change
  6. 8. the name for the line x=0 (2 words)
  7. 10. the middle value of a set of numbers