Given triangle $GHI$ with vertices $G=(0,0)$, $H=(0,8)$, and $I=(8,0)$, and triangle $JKL$ with vertices $J=(0,0)$, $K=(0,8+n)$, and $L=(8+n,0)$, where $n$ is a positive constant. If $\angle H$ has measure $y^{\circ }$, what is the measure of $\angle L$?