# Planar Graph

A planar graph is a network that can be drawn in a plane without any edges intersecting.

Planar graph is a college-level concept that would be first encountered in a discrete mathematics course covering graph theory.

### Examples

Cycle Graph: | A cycle graph is a network containing a single cycle which passes through all its vertices. |

Polyhedral Graph: | A polyhedral graph is a network made up of the vertices and edges of a polyhedron. Polyhedral graphs are always planar. |

Tree: | A tree is a network that contains no cycles. |

### Prerequisites

Graph: | In graph theory, a graph, also called a network, is a collection of points together with lines that connect some subset of the points. |