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What do you call a 20-sided polygon?

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A 20-sided polygon is called an icosagon. Along with having 20 sides, all icosagons have 20 interior angles that add up to a total of 3240 degrees.

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What do you call a 20-sided polygon?
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Regular icosagons have sides of equal length and identical interior angles, each of which measures 162 degrees. Irregular icosagons on the other hand, have sides and angles of varying lengths. A famous example of an irregular icosagon is a swastika. Although this symbol has become stigmatized in the Western world because of its association with the Nazi Party, it has a long history of use in multiple cultures. For instance, in India swastikas are used to represent prosperity and well-being.

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