Question

in fig. 5.24, quadrilateral ABCD is a parallelogram. angle ADB= 40 degree, angle ABD=30 degree, find the measure of angle BAD, angle DCB, angle ADC and angle ABC.
D________________ C
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A B

Answer 1

adb=40
ABD=30
DAB=180-40-30=110
ABC=180-DAB=70
ADC=180-DAB=70
DCB=DAB=110