Construction of a Pentagon on the cube Proof of Part I: Pentagon is Equilateral Proof of Part II: Pentagon is in One Plane Proof of Part III: Pentagon is Equiangular Proof of Part IV: Side of Dodec Form Apotome Construction of the Dodecahedron

This picture shows 2 of the same construction fits back to back to each other. The fit exactly together since both of the construction is situated at the same pair of Golden Ratio Division Points on the same side.

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