---
tag: 0XKBKGTCPC
kind: concept
name: Length of a vector
aliases: [magnitude-of-a-vector, euclidean-norm]
msc: [51N20]
sources:
  - url: https://en.wikipedia.org/wiki/Euclidean_vector
    locator: Length
---

## Summary

The length of a [[Euclidean vector|0QN3D80AWP]] is the nonnegative real number that measures its size. It is the distance between the start point and the end point of an arrow that represents the vector.