Fun with Real numbers...

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Across
  1. 4. The numbers that are not imaginary numbers.
  2. 6. A number that has two or more factors.
  3. 9. A number which cannot be written in the form p/q.
  4. 10. The product of HFC and LCM
  5. 11. A proven statement used for proving another statement.
Down
  1. 1. Solution of a graph of intersecting lines.
  2. 2. A number which can be written in the form p/q.
  3. 3. A series of well defined steps which gives procedure or solving a type of problem.
  4. 5. the branch of mathematics dealing with the properties and manipulation of numbers
  5. 7. terminating The decimal expansion that are does not terminate or end after a finite number of steps.
  6. 8. Father of Geometry