Which set of side lengths does not represent a right triangle? a. 7 inches, 10 inches, 16 inches b. 6 inches, 8 inches, 10 inches c. 5 inches, 12 inches, 13 inches d. 3 inches, 4 inches, 5 inches?

ddd

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.