en.wikipedia.org/wiki/Affine_geometry

In mathematics, **affine geometry** is what remains of Euclidean geometry when not
using the metric notions of distance and angle. As the notion of parallel lines is ...

mathworld.wolfram.com/AffineGeometry.html

An **affine geometry** is a geometry in which properties are preserved by parallel
projection from one plane to another. In an **affine geometry**, the third and fourth of
...

www.cis.upenn.edu/~cis610/geombchap2.pdf

planes in terms of affine forms is reviewed. The section ends with a closer look at
the intersection of affine subspaces. Our presentation of **affine geometry** is far ...

www.cut-the-knot.org/triangle/pythpar/Geometries.shtml

It's a known dictum that in **Affine Geometry** all triangles are the same. In this
context, the word affine was first used by Euler (affinis). In modern parlance,
Affine ...

www-history.mcs.st-and.ac.uk/~john/geometry/Lectures/L13.html

**Affine Geometry**. Recall from an earlier section that a Geometry consists of a set
S (usually R^{n} for us) together with a group G of transformations acting on S.

settheory.net/affine-geometry

After our general introduction to geometry, let us more precisely introduce **affine**
**geometry**, that is the description of affine spaces (classified by their dimension).

math.ucr.edu/~res/progeom/pgnotes02.pdf

**AFFINE GEOMETRY**. Theorem II.1. Let x, y and z be distinct points of S such that
z ∈ xy. Then {x,y,z} is a noncollinear set. Proof. Suppose that L is a line ...

math.stackexchange.com/questions/264857/difference-between-projective-geometry-and-affine-geometry

Dec 25, 2012 **...** Is the camera plane the projective space of the real world? It depends. Usually a
physical camera has a limited sensor, so the thing where the ...