Question

In the given figure, AB, CD and EF are three lines
concurrent at O. Find the value of y.
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Answer 1

angle aod is vertically opposite angle of boc

Angle Coe is vertically opposite angle of dof

5y+2y+2y=9y

9y = 180 degree

Y =20 degree

Answer 2

Answer:

9y=180° answer is y 20° ...........