Editing Graphics pipeline (section)

==== Definitions ====
A ''vertex'' (plural: vertices) is a point in the world. Many points are used to join the surfaces. In special cases, [[point cloud]]s are drawn directly, but this is still the exception.

A ''[[triangle primitives|triangle]]'' is the most common geometric primitive of computer graphics. It is defined by its three vertices and a [[normal vector]] – the normal vector serves to indicate the front face of the triangle and is a vector that is perpendicular to the surface. The triangle may be provided with a color or with a [[texture (computer graphics)|texture]] (image "glued" on top of it). Triangles are preferred over rectangles because their three points always exist in a single [[plane (geometry)|plane]].