Planar graphs

A **planar graph** is a graph that can be drawn on a plane without any edges crossing each other. In other words, it's possible to lay out the graph in such a way that no two edges intersect except at their endpoints (the vertices). Key characteristics of planar graphs include: 1. **Planar Representation**: If a graph is planar, it can be represented in two dimensions such that its edges only intersect at their vertices.