Answer
$\triangle$$RVS$ is a right $\triangle$
Work Step by Step
Because $\triangle$$RST$ is an equiangular triangle that means that all of the angles in the triangle are equal which means they must each be $60$$^{\circ}$. Since $\overline{RV}$ bisects $\angle$$SRT$ $\angle$$R$ must equal $30$$^{\circ}$ in $\triangle$$RVS$ and $\angle$$S$ equals $60$$^{\circ}$ since it is is part of an equilateral triangle. Now the sum of these two angles equals $90$$^{\circ}$ and we know that the sum of the interior angles of a triangle must equal $180$$^{\circ}$, we can prove that that $\angle$$V$ must equal $90$$^{\circ}$.
