Math Crossword Puzzle

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Across
  1. 3. four parts of the Cartesian Plane
  2. 6. can be written in the form p/q
  3. 7. x axis line is
  4. 8. y coordinate
  5. 9. When the remainder becomes zero, the decimal expansion is
  6. 11. German word which means to count
  7. 12. Which contains Natural number and zero
Down
  1. 1. x coordinate
  2. 2. intersection of axis
  3. 4. numbers combination of Rational and irrational numbers
  4. 5. area of triangle where height is not given
  5. 10. Whole Numbers that can be positive, negative or zero