Question

m∠2 = 30. find m∠4.

Explanation:

Step1: Identify angle - relationship

$\angle2$ and $\angle4$ are vertical angles.

Step2: Recall vertical - angle property

Vertical angles are congruent, so $m\angle4=m\angle2$.

Step3: Substitute the value of $m\angle2$

Since $m\angle2 = 30$, then $m\angle4=30$.

Answer:

D. 30