Which of the following represents side lengths that form a Pythagorean triple?

A. 7, 8, 9

B. 1, 2, 3

C. 4, 5, 6

D. 3, 4, 5

Try each set of 3 numbers in

a^2 + b^2 = c^2

The set that makes the equation true is the answer.

A. 7^2 + 8^2 = 9^2

49 + 64 = 81

113 = 81

Since the above statement is not true, choice A. does not work.

Now do the same with the numbers in choices B, C, and D until you find one set of numbers that works.