Slide 20 of 71
Notes:
I call this cube a Twisted Circle Cube. It’s a circle cube because all of the points are arranged along the circumference of a circle shown here with a dotted line. It’s twisted because so many lines cross each other. And, it can be untwisted. More mental gymnastics. Cut the pancake in half and flip the left half over as if you were cooking it on both sides. If we keep the lines connected to their original points, then it looks as if we have untwisted the four lines HD, GC, FB, and EA.