Question

the figure shows two parallel lines intersected by a transversal. what is ( mangle 1 )? ( mangle 1 = ) ? °

Explanation:

Step1: Identify corresponding angles

When parallel lines are cut by a transversal, corresponding angles are congruent. The 45° angle and $\angle 1$ are corresponding angles.

Step2: Set angle measures equal

Since corresponding angles are congruent, $m\angle 1 = 45^\circ$.

Answer:

$45$