Provide the Requested Proof $\mathrm { m } ( \angle \mathrm { D } ) = \mathrm { m } ( \angle \mathrm { C } )$

Essay

Provide the requested proof.
-In the trapezoid below, $\mathrm { m } ( \angle \mathrm { D } ) = \mathrm { m } ( \angle \mathrm { C } )$ and $\mathrm { AD } = \mathrm { BC }$ . If $\mathrm { M }$ is the midpoint of $\overline { \mathrm { CD } }$ , prove that $\mathrm { m } ( \angle \mathrm { MAB } ) = \mathrm { m } ( \angle \mathrm { MBA } )$ .