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Question

The measure of each interior angle of a regular nonagon is


A

90o

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B

180o

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C

40o

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D

140o

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Solution

The correct option is D

140o


We know that the sum of the interior angles of a polygon of n sides is equal to (- 2) 180o. Also, a nonagon has 9 sides.

Therefore,

9 Measure of each interior angle = (9 - 2) 180o

Measure of each interior angle of a nonagon = = 7 20o = 140o


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