Determine the value of x in the figure. Question 11 options:

A)

x = 40

B)

x = 135

C)

x = 90

D)

x = 45

Since this is an isosceles triangle, that means that x, and the angle opposite from x, are the same. We take 135° and subtract that from 180°. That gives us 45°. Since the angle opposing x is 45°, then x is 45° as well.

So your answer is 45