.png){kind=link}
 - Vertical.png){kind=link}
.png){kind=link}
 - Vertical.png){kind=link}
.svg){kind=link}
.png){kind=link}
Affine Geometry
Affine geometry is what remains of Euclidean geometry when ignoring the metric notions such as distance and angle.
Since parallel lines are one of the main properties of geometry that is independent of any metric, it is often considered the study of parallel lines or parallelism.