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Geometry

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Supplements And Bisectors

GEOM-CTLXCL

Let $\angle ABC$ and $\angle DEF$ be supplementary and let ray $\overrightarrow{EG}$ bisect $\angle DEF$

Find the measure of $\angle GEF$ if the measure of $\angle ABC = 70^{\circ}$.

A

$110^{\circ}$

B

$40^{\circ}$

C

$150^{\circ}$

D

$140^{\circ}$

E

$70^{\circ}$

F

$55^{\circ}$