Question

find the value of unknown angle A,B,C,D from the following diagram​

Answer 1

Answer:

a=100°

b=80°

c=100°

d=80°

Step-by-step explanation:

A straight line=180° -1

So a=180-80=100°

c=opposite angles are equals in parallelogram-2

So, c=a=100

As we know in 1

line=180

and a=100

so, d=180-100=80°

As we have seen in 2

so,d=b=80°