Math Crossword!

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Across
  1. 3. When the numerator and denominator of a fraction have a common factor.
  2. 4. The horizontal axis of a coordinate grid.
  3. 6. The counting numbers and their opposites.
  4. 9. Parallel_ _ _ _ _.
  5. 10. To find a solution to a problem.
  6. 13. The vertical axis of a coordinate grid.
  7. 16. A symbol that represents a number.
  8. 17. The size of each equal group made from data values.
  9. 18. A polygon with three angles.
  10. 20. The measure of the amount of space by an object.
Down
  1. 1. The point on a two-dimensional coordinate grid.
  2. 2. A relation in which every input value is paired with exactly one output value.
  3. 5. The number that is used as a factor.
  4. 7. To find the value of a numerical expression.
  5. 8. The quarter of a plane.
  6. 11. A smaller number written above another number to find how many times the number under the smaller number is used as a fractor.
  7. 12. A standard measurement.
  8. 14. To rewrite a fraction as a fraction with a smaller numerator and denominator.
  9. 15. A unit for measuring triangles,squares,polygons,etc.
  10. 19. An angle that is less than 90 degrees.