Question is do you ever use a protractor for Islamic Geometric Patterns? There's an interesting and perhaps purist culture (which I of course fully embrace!) where we love a compass and straight edge construction, but a protractor is just another tool, like so many other tools that can help us draw and create perfectly precise patterns. What do you think? p.s. this thought was born from approximate enneagon constructions in my Patreon Zoom. We discussed this little matter, especially as we were