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Angle A =70 degree = Angle C
let angle B and D be 2x since they both are equal. .....(i)
sum of all angles of a paralellogram is always 360 degree.
so Angle A+ Angle C+ Angle B+ Angle D= 360 degree.
=70 degree + 70 degree + 2x = 360 degree ......from(i)
140 degree + 2x = 360 degree
360 degree - 140 degree =2x
220 degree = 2x
x= 110 degree.
Angle B=Angle D=110 degree.
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