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Geometry

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Can You "C" The Missing Angle?

GEOM-MEG9EV

What must the measurement of $\angle c$ be in order for line $m$ to be parallel to line $n$?

A

$55^{\circ}$

B

$70^{\circ}$

C

$110^{\circ}$

D

$135^{\circ}$

E

The lines will never be parallel