Question

An angle of a parallelogram is 20° less than its adjacent angle.Find the measure of all its angles.

Answer 1

Answer:

let,ABCD be parallelogram and given adjacent angles are A,B.

A+A-20=180

2A=200

A=100

B=80

C=A=100

D=B=80

therfore,angles are 100,80,100,80.