Yeah, okay, I'll admit it. I like math. But that doesn't mean it's not evil. And I'm only in Algebra II. I just can't waaaaait till Trig or Clac. Ehe. Btw, all the little n's are there because we're doing Euller characteristics. (n is the last number in a set, which ties into that, trust me) If you don't know what those are... They're formulas showing the relationships between the number of edgres, faces and verticies of polygons, polyhedrons, etc. Yeah. And we didn't just have the HANDED to us. We had to FIGURE THEM OUT. Thus the expression.