Question

Please answer this question...​

Answer 1

Answer:

In a parallelogram adjacent angles sum is 180°

So according to the question,

x + (3x + 20) = 180

4x + 20 = 180

4x = 160

x = 40

So angle A = 40°

angle B = 3x + 20 = 3(40) + 20 = 160°

Opposite angle of a parallelogram is equal so angle A = angle D and angle B = angle C

therefore angle C = 160° and angle B = 40°

Answer 2

A+B=180°

x+3x+20=180

x=40°

A=C=40°

B=D=3×40+20=140°