Question

lines a and b are parallel. find the measure of ∠a. 116° a b m∠a = ?°

Explanation:

Step1: Identify angle - type relationship

When two parallel lines are cut by a transversal, corresponding angles are equal. $\angle a$ and the $116^{\circ}$ angle are corresponding angles.

Step2: Determine angle measure

Since corresponding angles are equal, $m\angle a=116^{\circ}$.

Answer:

$116$