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
From previous page:
the magenta line = 2 x blue line.

and
the cyan line = 2 x blue line.

Therefore:
magenta line  =  blue line.

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