Which side lengths form a right triangle? Choose all answers that apply: Choose all answers that apply: (Choice A) 4, 7, 9 (Choice B) 5, 12, 13 (Choice C) 20, 22, 24
The answer is Choice B. You can solve this by using the Pythagorean Theorem, which is A squared + B squared = C squared. 5 squared (25) + 12 squared (144) = 13 squared (169), so it would have to be Choice B.
