Question

prove that 'when two lines intersect, the vertically opposite angles so formed are equal'.​

Answer 1

Answer:

Now, let us consider the angles on the line AB. So, we get ∠COB+∠AOC=180∘ ---(2). ... From the figure, we can see that the angles ∠AOC and ∠BOD are vertically opposite angles. So, we have proved that if two lines intersect each other, then the vertically opposite angles are equal.

Answer 2

Hence, proved.

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