Think outside of the box and leave typical classroom geometry in the dust!
Beware: even a cute little angle can bite!
From perimeters and pi to stellations and tessellations.
Irregular puzzles with irregular polygons.
Shapes and angles inscribed and circumscribed.
The Euler Line will blow your mind.
M.C. Escher and beyond!
Investigating polyhedra and Euler's facet counting formula.
The abstract mathematics of origami.