Question

Select three sets of numbers that can be the side lengths of a right triangle

5, 6, 8
7, 24, 25
8, 10, 12
20, 21, 29
12, 35, 37

Answer 1

4th choice, 20, 21, 29 would be the answer.

Explanation:

Pythagorean Theorem: a^2 + b^2 = c^2

a= 20, b= 21, c= 29 ( c has to be the C, hypotenuse, because it is the longest)

therefore,

20^2 + 21^2 = 29^2

into

400 + 441 = 841,

which is true, makes the Pythagorean Theorem work.