Excerpt from Pentasia, by Robert Lang

Section of a surface based on Penrose tiling which demonstrates fivefold symmetry. Maestro Lang reworked the original modular design seen here as a single sheet model. Both may be seen on his website, langorigami.com, along with links to an accompanying article 'Paper Pentasia: An Aperiodic Surface in Modular Origami', published in The Mathematical Intelligencer.

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