https://github.com/davepinch/pinchy.cc/blob/master/content/topics/mathematics/shapes/heptadecagon/heptadecagon.md
Why This Great Mathematician Wanted a Heptadecagon on His Tombstone (scientificamerican.com) Mathematician Gauss left behind a trophy case of mathematical achievements to highlight on his tombstone, but above all he wanted a regular heptadecagon etched on it
Heptadecagon (Wikipedia) In geometry, a heptadecagon, septadecagon or 17-gon is a seventeen-sided polygon.
