Who put that there? I have my own revolving diamond. Thank you. The original three are still static though. They have just started moving as I was typing. How odd.
That first one the Ed has posted, that's what shape the Earth would have to be to solve the puzzle of the three utilities to three houses (Without any two utility feeds crossing one another). It's usually given to people on a flat piece of paper and can't be done (You get up to 8 connections and then get stuck).
Yes, I would say she's spinning clockwise, ChillDoubt.