Question

look at this diagram: if $overleftrightarrow{eg}$ and $overleftrightarrow{hj}$ are parallel lines and $mangle efi = 130^{circ}$, what is $mangle jif$?

Explanation:

Step1: Identify angle - relationship

$\angle EFI$ and $\angle JIF$ are vertical - angles.

Step2: Recall vertical - angle property

Vertical angles are congruent. So $m\angle JIF=m\angle EFI$.

Answer:

$130^{\circ}$