Real Number Crossword

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Across
  1. 2. a Greek mathematician, often referred to as the "founder of geometry" or the "father of geometry"
  2. 5. a number that occurs commonly and obviously in Arithmetic consists of the study of the properties of the traditional operations on numbers—addition, subtraction, multiplication, division, exponentiation, and extraction of roots
  3. 6. containing both positive and negative numbers
  4. 7. it is a proven statement used for proving another statement
  5. 9. a number that can be expressed as the quotient or fraction p/q of two integers
Down
  1. 1. combination of rational and irrational numbers
  2. 3. can't be defined by 'p/q' where q ≠ 0
  3. 4. any positive number that does not include a fractional or decimal part
  4. 8. a series of well defined steps which gives a procedure for solving a type of problem