Question

question 6 of 10
in the diagram below, \overleftrightarrow{ab} is parallel to \overleftrightarrow{cd}. what is the value of y?
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description
a. 72
b. 108
c. 82
d. 128

Explanation:

Step1: Identify supplementary angle

The angle adjacent to $72^\circ$ on line $CD$ is $180^\circ - 72^\circ = 108^\circ$.

Step2: Apply parallel lines rule

Since $\overleftrightarrow{AB} \parallel \overleftrightarrow{CD}$, $y$ is equal to this supplementary angle: $y = 108^\circ$.

Answer:

B. 108