In my abstract algebra class, field and Galois theory, we've talked a bit about constructing shapes by ruler and compass, a huge fact from algebra. This was hard to imagine for me at first, besides basic shapes drawn when I was bored in Geometry class in 9th grade. My friend Boramey recently found this video which shows the method of drawing all constructible polygons, SO AWESOME! My professor always mentioned how gnarly the 17-gon is and watching it drawn at minute 2:30 in the vid is so ridiculous. Thanks for the find Boramey!