If one angle of a parallelogram is 40 , what is the meausre of the other angle
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angle A = angle C ; angle B = angle D
suppose angle A is = 40
angle C is = 40
angle A + angle B is = 180
40+x= 180
x = 140
therefore angle A = 40, angle B = 140, angle C = 40, angle D = 140
suppose angle A is = 40
angle C is = 40
angle A + angle B is = 180
40+x= 180
x = 140
therefore angle A = 40, angle B = 140, angle C = 40, angle D = 140
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