## Elementary Geometry for College Students (5th Edition)

$\overline{RS}$ $\parallel$ $\overline{VT}$. $\overline{RV}$ $\parallel$ $\overline{ST}$.
According to the problem, RSTV is a rectangle. Opposite sides of a rectangle are parallel since a rectangle is a type of parallelogram. Therefore, $\overline{RS}$ $\parallel$ $\overline{VT}$ and $\overline{RV}$ $\parallel$ $\overline{ST}$.