Prove that if two lines intersect, then the vertically opposite angles

1.	Prove that if two lines intersect, then the vertically opposite angles are equal.
Answer» <html><body><h2>♠Answer♠</h2><p></p><p>∠COB=180∘−∠BOD ---(<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>). Now, let us consider the angles on the <a href="https://interviewquestions.tuteehub.com/tag/line-1074199" style="font-weight:bold;" target="_blank" title="Click to know more about LINE">LINE</a> <a href="https://interviewquestions.tuteehub.com/tag/ab-360636" style="font-weight:bold;" target="_blank" title="Click to know more about AB">AB</a>. So, we get ∠COB+∠AOC=180∘ ---(2). ... So, we have <a href="https://interviewquestions.tuteehub.com/tag/proved-7287273" style="font-weight:bold;" target="_blank" title="Click to know more about PROVED">PROVED</a> that if two lines intersect each other, then the vertically opposite angles are <a href="https://interviewquestions.tuteehub.com/tag/equal-446400" style="font-weight:bold;" target="_blank" title="Click to know more about EQUAL">EQUAL</a>.</p><h3> Hope it's helpful for you</h3><h3> And please mark me as brainlest</h3></body></html>

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