Euclid had a point. Go figure.
I gave my trigonometry students an assignment in programming: animate a geometric figure. They started off by drawing a cartoon panel. This is the one that I drew.
(Note to self: You have got to practice drawing!)
Anyway, as I looked more closely at the panel, I began to feel sorry for this guy. I was intrigued by the depth of my compassion. Who would have guessed that circles, lines, and planes could be so moving?