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Product Description
This figure is a dual pair with each element of the pair projected on to a sphere. The outside sphere is a Triakis Tetrahedron which is a Catalan Solid. The inner sphere is a Truncated Tetrahedron which is a Archimedean solid. The dual nature of the pair is demonstrated by the fact that the inner figure has a vertex where the outer figure has a face- and vice versa. Each figure has an edge crossing at right angles a corresponding edge on the other figure. This figure shows the beauty and elegance of geometry in a powerful way. There will eventually be thirteen such pairs (an Archimedean / Catalan dual) on this site. All are uniquely beautiful.