Question

what is the value of y? 108°

Explanation:

Step1: Recall angle - pair property

The two angles are supplementary (a linear - pair).

Step2: Use supplementary angle formula

Let the two angles be \(y\) and \(108^{\circ}\). Since they are supplementary, \(y + 108^{\circ}=180^{\circ}\).

Step3: Solve for \(y\)

\(y=180^{\circ}- 108^{\circ}\)

Answer:

\(72\)