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A twenty-sided polygon is called an "icosagon" If it is a regular icosagon - all its sides and angles are equal - then it's interior angles are all 162 degrees. You can verify this by drawing a line to the centre from each angle.. There will be 20 small angles arranged in a circle around the centre. These must total 360 degrees. As 360 / 20 = 18, this leaves the other angles of each triangle to add up to 162, because the interior angles of a triangle total 180 degrees.

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Q: What is the interior angle of a twenty sided polygon?
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What is the interior angle of a twenty-four-sided polygon?

If the polygon is regular, the measure of one interior angle of a 24 side polygon is 165 degrees.


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What degrees is each interior angle of a 38 sided polygon?

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What degrees is a interior angle of a 15 sided polygon?

Providing thar it is a regular 15 sided polygon then each interior angle will be 156 degrees


How do you compute the interior angle of a 13 sided polygon?

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