Mathematics

How many pairs of adjacent angles, in all, can you name in Fig.

10

SOLUTION
Number of pair of adjacent angles, from the figure, are :
$\angle EOC$ and $\angle DOC$
$\angle EOD$ and $\angle DOB$
$\angle DOC$ and $\angle COB$
$\angle EOD$ and $\angle DOA$
$\angle DOC$ and $\angle COA$
$\angle BOC$ and $\angle BOA$
$\angle BOA$ and $\angle BOD$
$\angle BOA$ and $\angle BOE$
$\angle EOC$ and $\angle COA$
$\angle EOC$ and $\angle COB$
$\therefore$  There are $10$ pairs of adjacent angles.

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One Word Medium Published on 09th 09, 2020
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