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Question

Question 94

Three lines AB, CD and EF interesect each other at O. If AOE=30 and DOB=40 (see the figure). Find COF.

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Solution

From the given figure, we have
AOE+EOD+DOB=180 [Sum of all angles on a straight line is 180]30+EOD+40=180EOD=18070EOD=110
Again, EOD=COF [vertically opposite angles]COF=110


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