# Shephard's Algorithm for Two Convex Polyhedra with a Common Net

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The same net can be folded up into two different convex polyhedra.

Contributed by: Izidor Hafner (July 2020)

Open content licensed under CC BY-NC-SA

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## Details

This Demonstration is based on Figure 25.8 [1, p. 389], which is attributed to Shephard [2].

Reference

[1] E. D. Demaine and J. O'Rourke, *Geometric Folding Algorithms: Linkages, Origami, Polyhedra*, New York: Cambridge University Press, 2007.

[2] G. C. Shephard, "Convex Polytopes with Convex Nets." *Mathematical Proceedings of the Cambridge Philosophical Society*, 78, 1975 pp. 389–403.

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