Uploaded January 2013 | Updated September 2026, 4 hours ago

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Fold and assemble a geometric puzzle with three bills. A challenging model for the brave!

Original concept by Thoki Yenn:
erikdemaine.org/thok/umulius.html

See Sara Adams give a tutorial on the original concept:
youtu.be/JdOpxqMxQ3A

Jim Cowling's $3 Umulius description:
erikdemaine.org/thok/umulig.html

A different spin by Andrew Hans:
erikdemaine.org/thok/billumu.html

Photos, scoring guide and video instructions (slightly different approach than mine) by William Sattler:
picasaweb.google.com/wilsat72/3DollarUmuliusRectangulum#