Question

Which set of sides would make a right triangle? (a2 + b2 + c2)

4, 5, 6
5, 10, 12
1, 2, 3
5, 12, 13

Answer 1

5, 12, 13

if we use pythagorean theorem we can prove this true, remember they longest number will always represent the hypotenuse! so:

(5)^2+(12)^2=(13)^2
25+144=169
169=169