If you like this, you'll love the book Proofs without Words: Exercises in Visual Thinking: http://www.amazon.com/Proofs-without-Words-Exercises-Classroom/dp/088

If you like this, you'll love the book Proofs without Words: Exercises in Visual Thinking: http://www.amazon.com/Proofs-without-Words-Exercises-Classroom/dp/0883857006/ref=sr_1_1?ie=UTF8&s=books&qid=1248540566&sr=8-1 http://www.amazon.com/Proofs-without-Words-Exercises-Classro...