# Baiocchi Figures for Polydecs

A *polydec,* or polydecagon, is a figure
formed by joining regular decagons edge to edge.
A *Baiocchi figure* is a figure
formed by joining copies of a polyform and having the maximal
symmetry for the polyform's class.
For polydecs, that means the symmetry of a regular decagon,
or 10-way rotary with reflection.
If a polydec lacks apothegmal bilateral symmetry, its Baiocchi figures
must be Galvagni figures or contain Galvagni figures.
Claudio
Baiocchi proposed the idea in January 2008.
Baiocchi figures first appeared in Erich Friedman's
Math Magic for that month.
Here are minimal known Baiocchi figures for polydecs
of orders 1 through 4.
Not all these solutions are uniquely minimal.

Last revised 2011-08-30.

Back to Baiocchi Figures
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Polyform Curiosities

Col. George Sicherman
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