Euler's Formula and Graph Duality - Part 2 of 4

The video tutorial explores Euler's characteristic formula, focusing on its application to planar graphs. It introduces key graph theory concepts such as cycles, spanning trees, and dual graphs. The tutorial explains how dual graphs relate to the original graph and demonstrates the duality between spanning trees in both graphs. The video emphasizes the elegance of Euler's formula and its implications in graph theory.

What new insight or understanding did you gain from this video?