Question

in the given figure AB||CD find the value of x

Answer 1

hey mate
here's the solution

Answer 2

$hey \: here \: is \: your \: answer.......$
angle AGE = angle BGH $(vertically \: opposite \: angle)$
so,

angle BGH + angle DHG =180° $( \: co. \: interior \: angle)$

$110 + (3x - 20) = 180 \\ 90 + 3x = 180 \\ 3x = 180 - 90 \\ 3x = 90$
x = 30°