PPT Slide
Ancient & Medieval Philosophy -- David L. Rouse
- They discovered Pythagorean triples--numbers the sum of whose squares is a square. This is closely related to the Pythagorean theorem.
- The theorem leads to the discovery of irrational numbers. If sides A and B of a right triangle each are 1, then the hypotenuse equals the square root of 2, which cannot be expressed as the ratio of two integers.