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

And now, transforming the Golden Ratio from the first page to this one: square of (purple line+ red line) +  square of purple line  =  3 x square of red line

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