Leon verified that the side lengths 21, 28, 35 form a pythagorean triple using this procedure. step 1: find the greatest common factor of the given lengths: 7 step 2: divide the given lengths by the greatest common factor: 3, 4, 5 step 3: verify that the lengths found in step 2 form a pythagorean triple: mc011-1.jpg leon states that 21, 28, 35 is a pythagorean triple because the lengths found in step 2 form a pythagorean triple. which explains whether or not leon is correct? yes, multiplying every length of a pythagorean triple by the same whole number results in a pythagorean triple. yes, any set of lengths with a common factor is a pythagorean triple. no, the lengths of pythagorean triples cannot have any common factors. no, the given side lengths can form a pythagorean triple even if the lengths found in step 2 do not.