Math Help - Math Questions 1

1. Math Questions 1

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2. Originally Posted by dgenerationx2
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Hello again,

I suppose we are to assume that quadrilateral ABCD is a parallelogram, else we couldn't do anything.

Angles B and C are supplementary because they are consecutive interior angles between 2 parallel lines and transversal BC.

$8x-25+7x+55=180$

$15x+30=180$

$15x=150$

$x=10$

$m \angle B=8(10)-25=55$

$m\angle C=180-55=125$

$m\angle A=m\angle C=125$

$m\angle D=m\angle B=55$