Question

In figure below, angles x and y are supplementary angles. If angle x= 110, find the value of y.

Answer 1

According to given condition,
$$\begin{gathered} \angle x+\angle y=180° \\ \Rightarrow 110°+\angle y=180° \\ \Rightarrow \angle y=180°-110° \\ \Rightarrow \angle y=70° \end{gathered}$$