Polygrins
Christopher Danielson has gotten making spiraling polygons in real life (cf. spiraling pentagons
) and that got me playing with virtual ones again. In particular, nice closed formations. (Try 2 sets of 7 nonagons for example.)
The sketch is a bit hinky, and right now I have this odd sketch and a separate even one.
The heptagrin was a name suggested by Matt Parker, that I saw in this post from Jess Hawke, Heptagrin Girl, via Kathryn Peake, https://www.geogebra.org/kathrynp.
These are fun; beware of rabbit holes.