\begin{definition}[Definition:Geometry]
'''Geometry''' is a branch of mathematics which studies such matters as form, position, dimension and various other properties of ordinary space.
It has been suggested that '''geometry''' can be divided into $3$ main branches:
:'''Metrical geometry''', that is to say, what is understood as '''geometry''' proper
:'''Projective geometry'''
:'''Analytic geometry'''
\end{definition}