The measure of an external angle of a 15 sided regular polygon is -

21°

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20°

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24°

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26°

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28°

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Solution

The correct option is C
24°

Measure of an interior angle of an `n' sided regular polygon = $\frac{(n - 2) 180^{o}}{n}$

n = 15

Measure of an exterior angle = 180 $^{\circ}$ -156 $^{\circ}$ = 24 $^{\circ}$

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