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Math·Geometry and Trigonometry·Lines, angles, and triangles

easy

In $△JKL$, the measures of both $\angle J$ and $\angle K$ are equal and the measure of $\angle L$ is $124^{\circ }$. What is the measure of $\angle J$?

A

$28^{\circ }$

B

$56^{\circ }$

C

$62^{\circ }$

D

$90^{\circ }$