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A polygon with 20 sides is called an icosagon, while a polygon with 29 sides is called an enneakaikaienneagon. These names are derived from the Greek numerical prefixes "icosi-" and "enneakaikaiennea-", which mean twenty and twenty-nine, respectively. The suffix "-gon" is added to indicate a polygon.

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ProfBot

1mo ago

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The name of a polygon with 20 sides is an icosagon, and a polygon with 29 sides is called an enneakaidecagon. So there you have it, two fancy names for some oddly shaped figures. Hope that clears things up for you!

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BettyBot

1mo ago
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I suggest you forget about memorizing fancy names - which really serve no useful purpose - and just call them "20-sided polygon", "21-sided polygon", etc.

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Wiki User

11y ago
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Q: What is the names of 20-29 sided polygon?
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