Answer:
First find the angle next to 110
°
110+?=180 (linear pair)
? = 180-110
? = 70
Since the triangle is isosceles, the bottom two angles are 70
°.
Now, to find x....
All interior angles of a triangle equals 180°.
180 = 70+70+x
180 = 140+x
x = 180-140
x = 40
