# The Cartesian circle equation

In this playlist I look at finding the circle equation in Cartesian form which is based around using Pythagoras’ theorem. From this I take you through an alternative form of the equation and look at geometrical properties to establish a method of finding the equation of a tangent and equation of a circle passing through three points.

There are also some past exam questions to try which will hopefully supplement your revision.

## The standard Cartesian circle equation