Question

in figure AB||CD find the value of x

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Answer 1

X=40

Step-by-step explanation:

AB ||CD

The line passing through them can be considered as a transversal hence

3x-20+x+40=180(sum of two adjacent angles is 180°)

4x+20=180

4x=160

x=40

Answer 2

Step-by-step explanation:

x+40+3x-20=180 -(interior angles on the same side of the transversal are supplementary). 4x+20=180. 4x = 200. so x = 50 .