最終更新日：2024/08/03
The Brianchon hexagons are a set of six tangent hexagons inscribed in a conic section.
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The Brianchon hexagons are a set of six tangent hexagons inscribed in a conic section.
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The Brianchon hexagons are a set of six tangent hexagons inscribed in a conic section.
The Brianchon hexagons are a set of six tangent hexagons inscribed in a conic section.
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