Question

Which sets of three of numbers represent the sides of an obtuse triangle? Check all that apply. 4, 7, 8 3, 4, 5 2, 2, 3 6, 8, 9 3, 5, 6

Answer 1

2,2,3 (C) and 3,5,6 (E) are the correct answers. The squares of 2 of their sides are less that that of the third side.