Question

one angle of a parallelogram is 60 degree find its opposite angle and the adjacent angle

Answer 1

One angle is 60
so opp.angle will also be 60
adjacent angle=180-60=120

Answer 2

opposite angle= 60°
(opp. angle of llgm are equal)
angle 1 +angle 2 (adjacent angle) = 180°(co-interior)
60° + x = 180°
x= 120°