\begin{definition}[Definition:Circumscribe/Polygon around Circle]
A polygon is '''circumscribed around''' a circle when each of its sides is tangent to the circumference of the circle:
:300px
{{EuclidSaid}}
:''{{:Definition:Euclid's Definitions - Book IV/4 - Circumscribed about Circle}}''
{{EuclidDefRefNocat|IV|4|Circumscribed about Circle}}
\end{definition}