An integer n is a congruent number iff there exists a right triangle having area n and rational sides. (Sloane A003273)
Show that the numbers 5,6,7 are congruent and 8 is not.

Determine how to decide whether a given number is congruent or not.

google: The Congruent Number Problem

Posted by Ady TZIDON on 2013-03-09 00:22:25