Question

ABCD is parallelogram and angle B=100°, find the angle A,B,D​

Answer 1

all sides are equal a b c d is

Answer 2

Step-by-step explanation:

In a parallelogram,

1.Opposite angles are equal.

2.Adjacent angles are supplementary.

Therefore,

1. Angle B = Angle D=100°

2. Angle A + Angle B = 180°

= angle A +100°=180°

= Angle A= 180°-100°

= angle A = 80°

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