---
tag: FX4KBP5CNX
kind: concept
name: Adjacent
aliases: [adjacency-graph-theory, adjacent-graph-theory, non-adjacent, nonadjacent]
sources:
  - wikipedia: en:325802@r1373839425
    locator: Glossary of graph theory, section A
    note: adopted
    mention: wikipedia://en/325802#I1QI
    sections: [Summary]
inventory: [M9QPWKA6QM]
---

## Summary

The relation between two vertices that are both endpoints of the same edge.

The relation between two distinct edges that share an end vertex.