Mathematics

Given AB, CD and EF straight   lines intersecting at the point O.  If $a = c < 45$, then:

EF bisects $\angle BOD$

SOLUTION
Given: $a=c$
But, $a=d$ and $c=b$       ...(Vertically opposite angles)
$\Rightarrow d=b$
Therefore, $EF$ is a bisector of $\angle BOD$ and $\angle AOC$.

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Single Correct Medium Published on 09th 09, 2020
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