Here is a schematic of its medial axis. The seams are represented by straight lines.

The sixteen empty magenta squares are planar sheets. They lie within the bisector of the top and bottom of the box.

The pizza box with *n* spikes in each direction is an example of
a polyhedron of *Theta(n)* complexity having a medial axis of
*Theta(n ^{2})* complexity. More interestingly, it has

Tim Culver Last modified: Sun Aug 27 23:20:16 EDT 2000