[New post] Byopia Press Advent Calendar 2023: Day Two and a One Strip Hexahedron
Byopia Press posted: "In case you stumbled over the last word in the title, "a hexahedron (pl.: hexahedra or hexahedrons) or sexahedron (pl.: sexahedra or sexahedrons) is any polyhedron with six faces. A cube, for example, is a regular hexahedron with all its faces square, and" Byopia Press
Yesterday's cube is a hexahedron. Today's project (also a hexahedron) is a triangular bipyramid — two three-sided pyramids stuck together at their bottoms. It can be folded from one strip of paper without thinking about what it is called or the mathematical formula that goes with it.
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