Table of Contents:
The Bridges of Konigsberg
The Value of Pi
Prime Numbers
Famous Paradoxes
The Problem of Points Proof of the Pythagorean Theorem

Having trouble? That's okay, so did Euler. It doesn't seem possible to cross every bridge exactly once. In fact it isn't. To find out why, go to Euler's Solution of the Problem: The Degree of a Vertex. 
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