The Amazing Heptadecagon (17-gon) - Numberphile
More on the math behind this: http://youtu.be/oYlB5lUGlbw More links & stuff in full description below ↓↓↓ Professor David Eisenbud - director of MSRI - on the amazing 17-gon and its...
==========
So in the Greek times people were very interested in regular polygons, and in geometry. It was the dawn of geometry, really And they wanted to construct as many polygons as they could But regular, all the sides are the same length all the angles the same They where very interested in constructions with ruler and compass alone. Here's a good compass Ruler meant just a straight edge No markings on it at all. This one has markings but I'm gonna use it anyway. I won't use the markings. Here's a nice circle, drawn with a compass, in the old style So if I pick a point in the circle, I'm gonna draw a hexagon In a way that everybody will know, who has ever played with ruler and compass I'm keeping the compass length the same as it was for the...
==========
So in the Greek times people were very interested in regular polygons, and in geometry. It was the dawn of geometry, really And they wanted to construct as many polygons as they could But regular, all the sides are the same length all the angles the same They where very interested in constructions with ruler and compass alone. Here's a good compass Ruler meant just a straight edge No markings on it at all. This one has markings but I'm gonna use it anyway. I won't use the markings. Here's a nice circle, drawn with a compass, in the old style So if I pick a point in the circle, I'm gonna draw a hexagon In a way that everybody will know, who has ever played with ruler and compass I'm keeping the compass length the same as it was for the...
