how to cut a regular tetrahedron using a helicoid cut

Ronald Yannone shared this question 1 week ago
Needs Answer

Would appreciate help in using GeoGebra to show 3D plot to repeat George Hart's cutting of a regular tetrahedron into 2 equal parts using the helicoid curve cut -- as indicated in the attached WORD document where it describes George Hart's procedure. What sample equation of the regular tetrahedron and helicoid can be used and 3D plotted to see the 2 equal parts as one rotates the plot? George Hart mentions a 1.25 revolutions used in creating the helicoid cut and he cuts from one edge to the opposite edge.

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