#### Answer

The sum of the three angles in any triangle is $180^{\circ}$
Therefore:
$\angle K \cong \angle L$

#### Work Step by Step

The sum of the three angles in any triangle is $180^{\circ}$
$180 = m\angle K+m\angle JHK+m\angle HJK = m\angle L+m\angle JHL+m\angle HJL$
$m\angle K = m\angle L$
$\angle K \cong \angle L$