Question

look at this diagram: if $overleftrightarrow{rt}$ and $overleftrightarrow{uw}$ are parallel lines and $mangle tsv = 121^{circ}$, what is $mangle wvx$?

Explanation:

Step1: Identify angle - type relationship

$\angle TSV$ and $\angle WVX$ are vertical angles.

Step2: Recall vertical - angle property

Vertical angles are congruent. So $m\angle WVX=m\angle TSV$.

Answer:

$121$