Pyramid Flexagons

Traditionally, the leaves used to construct flexagons are flat convex polygons that are hinged together in a band. The leaves are often regarded as rigid, although leaf bending is sometimes allowed during flexing. However, there is no mathematical reason why leaves have to be flat. The only restriction on their shape is that adjacent leaves must nest without interference when folded together. A pyramid flexagon is a conventional flexagon with the flat leaves replaced by appropriate open based right pyramids. For descriptions of three examples click the following link, and then on the link that appears in the preview. Pyramid Flexagons 2

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