Question

ABCD is a parallelogram with diagonal AC. If the measure of angle CAB is 21° and the measure of angle ADC is 125°, what is the measure of angle DAC?

Answer 1

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Answer 2

sum of two adjacent angles of a parallelogram=180
\[ \angle ADC+\angle BAD=180^\circ\]
\[\angle ADC+\angle DAC+\angle CAB=180^\circ\]