Question

current skill $ find the measure of angle 5. label optional

Explanation:

Step1: Identify vertical - angle relationship

Angle 1 and the given 110° angle are vertical angles, so $\angle1 = 110^{\circ}$.

Step2: Identify corresponding - angle relationship

Since the two lines are parallel, angle 1 and angle 5 are corresponding angles. Corresponding angles are equal when two parallel lines are cut by a transversal. So $\angle5=\angle1$.

Answer:

$110^{\circ}$