Dodecagon -- from Wolfram MathWorld
- ️Weisstein, Eric W.
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A dodecagon is a 12-sided polygon. Several special types of dodecagons are illustrated above. In particular, a dodecagon with vertices equally spaced around a circle and with all sides the same length is a regular polygon known as a regular dodecagon.
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Polygon, Regular Dodecagon Explore this topic in the MathWorld classroom
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Weisstein, Eric W. "Dodecagon." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Dodecagon.html