Q. 165.0( 4 Votes )

In the given figure, straight lines AB and CD intersect at O. If AOC = ϕ, BOC = θ and θ = 3θ, then θ = ?


A. 30°

B. 40°

C. 45°

D. 60°

Answer :

As we know that sum of all angles on a straight line is 180o.


According to question,



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