Question

suppose m∠1 = 112. what is m∠3?
o 112 degrees
o 68 degrees
o 248 degrees
o 22 degrees

Explanation:

Step1: Identify vertical - angle relationship

Vertical angles are equal. $\angle1$ and $\angle3$ are vertical angles.

Step2: Determine the measure of $\angle3$

Since $\angle1 = 112^{\circ}$ and $\angle1=\angle3$ (vertical - angles are equal), then $m\angle3 = 112^{\circ}$.

Answer:

112 degrees