Question

Find the value of x. the diagram is not to scale.

Answer 1

The top angle is going to be 110 too so you add 110 and 57 which equals 167. Subtract that from 180 and the answer is x=13

Answer 2

opposite angles are equal so where the 110 is outside the triangle, it is also 110 inside the triangle.

the 3 angles need to = 180

so you have 110 + 57 = 167

x = 180-167 = 13

x = 13