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 formula

## Happy birthday!

Happy 302nd birthday Leonhard Euler! In celebration of your birthday I’ll be giving a talk (a day late) about one of your theorems. During the time it took me to write this blog post, you would have written a groundbreaking research paper. [photo from PinkCakeBox]