The measure of each interior angle of a regular 18 - sided polygon is ___

$120^{\circ}$

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$150^{\circ}$

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$160^{\circ}$

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$170^{\circ}$

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Solution

The correct option is C
$160^{\circ}$

n = 18

$e^{\circ} = \frac{360^{\circ}}{18}$

$= 20^{\circ}$

We know $i^{\circ} + e^{\circ} = 180^{\circ}$

$∴ i^{\circ} = 180^{\circ} - 20$

$i^{\circ} = 160^{\circ}$

Ans: (C)

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The measure of each interior angle of a regular 18 - sided polygon is ___

The correct option is C 160∘ n = 18 e∘=360∘18 =20∘ We know i∘+e∘=180∘ ∴ i∘=180∘−20 i∘=160∘ Ans: (C)

The correct option is C
$160^{\circ}$

n = 18

$e^{\circ} = \frac{360^{\circ}}{18}$

$= 20^{\circ}$

We know $i^{\circ} + e^{\circ} = 180^{\circ}$

$∴ i^{\circ} = 180^{\circ} - 20$

$i^{\circ} = 160^{\circ}$

Ans: (C)