Ah, the forty-seventh problem of Euclid.

Eureka.

I am, thanks to Khan Academy, a Math addict. At least it doesn't ruin my looks.

Actually, the ability to do Arithmetic is a threat to this administration

And yeah, Khan Academy rocks like sox in a box! It's kind of like having Dad sit down at the kitchen table and explain math to you. A great way to fill gaps in your education. Their probability stuff got me thru a course in modern Artificial Intelligence at Udacity - another excellent on-line learning resource.