---
tag: 0AFNNTRTJE
kind: concept
name: Collinear points
aliases: [collinearity]
msc: [51N10]
sources:
  - url: https://en.wikipedia.org/wiki/Collinearity
    locator: lead section
same_as:
  wikidata: Q1419761
  wikipedia: Collinearity
---

## Summary

Points are collinear when one line contains all of them. Three points that are not collinear are the vertices of a triangle.