[These pages were authored by the late Thoki Yenn, and were restored here from the Internet Archive by Erik Demaine, with contributions of missing files from various readers (notably Tommy Stevens, Roberto Morassi, and Boaz Shuval). If you spot any other bugs like missing images or pages, please report them.]

flip-flop parallelepipeds.

Flip - Flop by Thoki Yenn

Diagram: Scott Cramer

Additional Info about step 19

NEW Alternate Step 16

Photos of Flip Flop from Dollar Bills
Answer to a Question about twotone version.

Curious go to More about Flip Flop

updated 13. December 2000.

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