View source for 1 (number)

'''1''' ('''one''') also called "unit", "unity", and "(multiplicative) identity" is a [[number]], a [[Numeral (linguistics)|numeral]], and the name of the [[glyph]] representing that number.

== Description ==

It represents a single entity, the [[unit (ring theory)|unit]] of [[counting]] or [[measurement]]. For example, a [[line segment]] of "unit length" is a line segment of [[length]] 1.

== See also ==

* [[Numeral system]]

== External links == 

* [https://en.wikipedia.org/wiki/1_(number) 1 (number)] @ Wikipedia