Question

the triplet 3 4 5 is not a Pythagorean triplet​

Answer 1

Answer:

Is the 3-4-5 the only Pythagorean Triple? No, because we can double the length of the sides of the 3-4-5 triangle and still have a right-angled triangle: its sides will be 6-8-10 and we can check that 102 = 62 + 82.