Question

if an angle of a parallelogram is four fifth of its adjacent angle,find the angles of the parallelogram

Answer 1

Let the adjacent angle be x so the other angle is 4/5x  Sumof adjacent angle is 180 degrees   X + 4/5x=180 5/5x+4/5x =180 9/5x=180 9x=180*5=900 X=900/9=100   X = 100 Adjacent angle is 4/5*100=80