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Question


Refer the figure and identify which of the following are correct?

A
AOD=138°
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B
AOD=42°
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C
BOD=42°
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D
BOD=138°
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Solution

The correct options are
A AOD=138°
C BOD=42°

Given, COA=42°.

AOD+COA=180°(Linear Pair)AOD+42°=180°AOD=180°42°=138°Hence, AOD=138°.

COA=BOD=42°(Vertically Opposite angles)

Thus, AOD=138° and BOD=42°.

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