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Triangle Pentagon Erecting


Erecting regular pentagons on the sides of a triangle internally leads to the inner pentagon point, while doing so externally gives the outer pentagon point.


See also

Inner Pentagon Point, Outer Pentagon Point

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Cite this as:

Weisstein, Eric W. "Triangle Pentagon Erecting." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/TrianglePentagonErecting.html

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