if adjacent angle A and B parallelogram ABCD and are in the ratio 7 : 5 then find all the angle of parallelogram
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.Answer:Let angle A=7x
and angle B=5x
7x+ 5x=180
12x=180=180/12=15and ANGLE A=7x=7 x 15=105 and ANGLE B= 5x =5 x 15=75 and angle C=180-75=105 AND Angle D=180-105=75.
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