The coordinate system we use today is a right hand coordinate system, in other words the axis intersect each other at a 90º angle.
The coordinates system’s with two axis, a two dimensional one, is normally called a *Cartesian coordinate system* after René Descartes. In a Cartesian coordinate system, the axes don’t necessarily need to intersect at a 90º but normally do. We will only work with the right hand coordinate system. |
Bild: Torben Freytag |