Question

in the diagram below, $overline{ab}$ is parallel to $overline{cd}$. what is the value of $y$? a. 120 b. 60 c. 90 d. 30

Explanation:

Step1: Recall parallel - line property

When two parallel lines are cut by a transversal, corresponding angles are equal. Here, the angle measuring 60° and the angle measuring y° are corresponding angles.

Step2: Set up the equation

Since corresponding angles are equal, we have y = 60.

Answer:

B. 60