A hexagon is contained in a cube, each vertex of the hexagon lies in the middle of an edge of the cube. This hexagon is equiangular, why is it also regular?
Prince Rupert's Cube
Prince Rupert's Cube by TomM, Download free STL model
Full article: Cubes and Boxes Have Rupert's Passages in Every Nontrivial Direction
Which polyhedra can cage a bigger copy of themselves?
Full article: Optimizing for the Rupert Property
Prince Rupert's cube - Wikidata
Prince Rupert's Cube – The Nature of Mathematics… in 3D
Rupert Polyhedra: Cube - Sam Hartburn
Prince Rupert's Lego Cube – Arthur O'Dwyer – Stuff mostly about C++
Rupert Polyhedra: Cube - Sam Hartburn
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