quadrilateral ABCD is a parallelogram angle b is equal to 60 degree then find angle A and angle d
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As the opposite angles of a parellelogram are equal, hence, Angle D = Angle B = 60°.
As the adjacent angles of a parellelogram are a linear pair, hence,
Angle A + Angle B = 180°
=> Angle A + 60° = 180°
=> Angle A = 180° - 60°
=> Angle A = 120°
As the adjacent angles of a parellelogram are a linear pair, hence,
Angle A + Angle B = 180°
=> Angle A + 60° = 180°
=> Angle A = 180° - 60°
=> Angle A = 120°
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