Question

An isosceles triangle has an angle that measures 116.6°. Which other angles could be in that isosceles triangle? Choose all that apply.
77.6
31.7
59.5
116.6

Answer 1

D is wrong. It can't have 2 angles equal to or greater than 90.

2x + 116.6 = 180
2x = 180 - 116.6
2x = 63.4
x = 63.4/2
x = 31.7   Two of this size are the only possible answers.