Question

Do the sides lengths 13, 84, and 85 form a Pythagorean Triple? Why or why not?

Answer 1

yes, because 13^2 + 84^2 = 85^2

Answer 2

Use the pythagorean theorem to check


a^2 + b^2 = c^2


13^2 + 84^2 = 85^2


169 + 7056 = 7225


7225 = 7225


Since that last equation is true, this means that these side lengths do form a right triangle

Answer 3

So 13, 84, and 85 form a Pythagorean Triple.