In a parallelogram ABCD, the measures of angle B =120degree. Find the measures of c angle and d angle
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angle B + angle D = 180
120 + X = 180
X = 60 angle D = 60
angle B = angle C
angle C = 120
120 + X = 180
X = 60 angle D = 60
angle B = angle C
angle C = 120
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