In the given figure arrange the following angles in descending order of their measures.

I

I I I

I I

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I I

I I I

I

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I I I

I

I I

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I I

I

I I I

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Solution

The correct option is B $I I$ , $I I I$ , $I$
$∠ I$ is acute .So it is less than $90^{\circ}$
$∠ I I I$ is right angle . So $∠ I I I = 90^{\circ}$
$∠ I I$ is obtuse. so it is greater than $90^{\circ}$
So the descending order of angles is
$I I, I I I, I$
Option $B$ is correct.

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