Math!

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Across
  1. 2. a geometrical series of logical deductions to prove certain conclusions
  2. 3. a ___ number is a natural number greater than 1 that is not a product of two smaller natural numbers
  3. 5. the value that has the most frequency in a data set
  4. 6. the side of a triangle opposite to the right angle
  5. 7. summing a value set and dividing by the number of items in the set
  6. 8. positive or negative whole numbers
  7. 9. the "middle" number in a value set
  8. 10. an instrument that was used for accounting in ancient Asia
Down
  1. 1. two angles that add up to 180° are ___
  2. 2. a simple quadrilateral that has two sets of parallel sides
  3. 4. a series of points that show a certain position on a 2-dimensional or 3-dimensional graph