\begin{definition}[Definition:Angle]
Given two intersecting lines or line segments, the amount of rotation about the intersection required to bring one into correspondence with the other is called the '''angle''' between them.
{{refactor|This definition could actually be used for Definition:Directed Angle if we care to create it.}}
{{EuclidSaid}}
:''{{:Definition:Euclid's Definitions - Book I/8 - Plane Angle}}''
{{EuclidDefRefNocat|I|8|Plane Angle}}
\end{definition}