\begin{definition}[Definition:Euclid's Definitions - Book IV/1 - Inscribe]
{{EuclidSaid}}
:''A rectilineal figure is said to be '''inscribed in a rectilineal figure''' when the respective angles of the inscribed figure lie on the respective sides of that in which it is inscribed.''
{{EuclidDefRef|IV|1|Inscribe}}
\end{definition}