Question

if an angle of a parallelogram is two third of its adjacent angle then find the smallest angle of parallelogram

Answer 1

2/3x is smallest angle

Answer 2

in a parallelogram
$x + (2 \div 3)x = 180$
$(5 \div 3) \times x = 180$
so,
$x = 108 \: deg$
and
$(2 \div 3)x = (2 \div 3) \times 108$
$(2 \div 3)x = 72 \: deg$
thus smallest angle is 72°.