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OpenStudy (anonymous):
Figure ABCD is a parallelogram. Diagonals AC and BD meet at E, mDBC = 28°, mBCA = 78°, and mBEC = 74°. What is the measure of DAC?
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OpenStudy (anonymous):
DA and BC are parallel lines now angle DAC and ACB are alternate angles. Alternate angles shoule be equal DAC = ACB or BCA hence angle DAC=78
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