| | | | (c - a)(c - b)/2 is perfect square | | (c - even leg) and (c - odd leg)/2 are both squares | | at most one of a, b, c is square | | area of triangle cannot be a square or twice a square | | exactly one of a, b is odd | | exactly one of a, b is divisible by 3 | | exactly one of a, b is divisible by 4 | | exactly one of a, b, c is divisible by 5 | | all prime factors of c have the form 4n + 1 | | a, b, c are relatively prime | |
|
|
|