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Moderate

Properties of Parallelograms

ACTMAT-QEY1G5

For parallelogram ABCD, if $m{\angle}A = 4x$ and $m{\angle}D = 7x-18$, what is the measure of $ {\angle}C $, in degrees?

A

$6°$

B

$18°$

C

$24°$

D

$72°$

E

$108°$