As you may know, I wrote a book on Euler’s polyhedron formula. (Euler’s formula says that every polyhedron with V vertices, E edges, and F faces satisfies V-E+F=2.) I gave a talk recently during which I lamented that kids aren’t taught this beautiful theorem; after all, it relies only on counting, addition, and subtraction. After…

# Tag: Euler’s polyhedron formula

## 2009 Times Square New Year’s Eve Ball

We can look forward to a very mathematical New Year’s eve ball in Times Square this year. According to the Times Square website: The new Times Square New Yearâ€™s Eve Ball is a 12 foot geodesic sphere, double the size of previous Balls, and weighs 11,875 pounds. Covered in 2,668 Waterford Crystals and powered by…