ASVAB Find Angle CAD: Using Alternate Interior Angles

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karush
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Geometry problem figure: parallelogram ABCD with diagonal AC, angle ABC marked 40 degrees, angle ACD marked 57 degrees, and angle CAD marked with a question mark. Answer choices A through E: 40, 57, 77, 83, 97 degrees.


OK wanted to see how a transparent image would look like here:unsure:

well first $\angle{BAC}=57^o$ by alternate interior angle are equal

and then...