Wrecked Angle -- Extra Square Inch
Mobius Strip

Mobius Card -- An Impossible Shape!
Map Coloring

The Geometrical Romance of Miss Poly Hedron
The Story of Joe Sine

Square Abouts
A Magic Hexagon

Op Art (Circles)
The 10 Square Rectangle (MAR 2016 POM)

The 9 Square Rectangle (NOV 28, 2005 POW)
Shapes -- Word Chain

Shapes -- Word Search
Another 9 Square Rectangle