To figure out whether or not this is a right triangle, we can use Pythagorean theorem.
hypotenuse^2 = sideA^2 + sideB^2
Our hypotenuse should be the largest side, so...
16^2 should = 12^2 + 8^2
16^2 = 12^2 + 8^2
256 = 144 + 64
256 ≠ 208
So this is NOT a right triangle :)
