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OpenStudy (anonymous):
If , find such that quadrilateral ABCD is a parallelogram. The diagram is not to scale.
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OpenStudy (muzzack):
do you mean If mB = mD = 39°, find mC so that quadrilateral ABCD is a parallelogram. The diagram is not to scale.
OpenStudy (muzzack):
im sure it is 141°
OpenStudy (muzzack):
m < C + m < D = 180 x + 39 = 180 solve for x
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