\begin{definition}[Definition:Geometric Figure]
A '''geometric figure''' is intuitively defined as a set of [[Definition:Point|points]] and [[Definition:Line|lines]] in space.
{{EuclidSaid}}
:''{{:Definition:Euclid's Definitions - Book I/14 - Geometric Figure}}''
{{EuclidDefRefNocat|I|14|Geometric Figure}}
The [[Definition:Boundary (Geometry)|boundary]] may or may not be included in a particular figure. If this is important (and in the study of [[Definition:Topology (Mathematical Branch)|topology]] it usually is), then whether it is included or not needs to be specified.
=== [[Definition:Geometric Figure/Plane Figure|Plane Figure]] ===
{{:Definition:Geometric Figure/Plane Figure}}
=== [[Definition:Geometric Figure/Three-Dimensional Figure|Three-Dimensional Figure]] ===
{{:Definition:Geometric Figure/Three-Dimensional Figure}}
=== [[Definition:Geometric Figure/Rectilineal Figure|Rectilineal Figure]] ===
{{:Definition:Geometric Figure/Rectilineal Figure}}
\end{definition}
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