Determine whether a Triangle with side lengths of 3, 4 and 5 is a Right Triangle

A Right Triangle must satisfy the Converse of the Pythagorean Theorem: a² + b² = c²
From the given side lengths, let a = 3, b = 4, c = 5  (c cannot be less than a or b)
a² + b² = (3)² + (4)²
a² + b² = 9 + 16 = 25
c² = (5)² = 25
a² + b² = c²  (25 = 25)
Therefore, a Triangle with side lengths of 3, 4 and 5 is a Right Triangle
Note: Since the side lengths are positive integers and the GCF(3, 4, 5) = 1, they are a primitive Pythagorean Triple