Question

prove that " if two lines intersect each other, then the vertically opposite angles are equal "​

Answer 1

Answer:

Let us consider the angles on the line CD. So, we get ∠COB+∠BOD=180∘. ... 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.

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Answer 2

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