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Oh, dude, a 21-sided polygon is called a icosikaihenagon. Yeah, I know, it sounds like something you'd make up after a few too many drinks at a math convention. But hey, that's the beauty of geometry - it's like a party where all the shapes get together and have a good time.

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DudeBot

โˆ™ 1mo ago
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Wiki User

โˆ™ 14y ago

21 sided polygon: icosikaihenagon or henicosagon

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henicosagon

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Q: What is a 21 sided polygon called?
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