In this tutorial I show you how you can find the equation of a circle passing through three points on the circumference.

I start by giving the general method then go on to work through a basic example and then in the second video I look at a harder problem.

Here are the examples if you wish to try them first before looking at the video worked solution.

(4)

Find the equation of the circle passing through the points (-1,5), (3,5) and (3,-1)

(5)

Find the equation of the circle passing through the points (-2,2), (5,1) and (-2,-6)

Numerical Solutions