The Circle

Radius, Center, and Equation of a Circle

These videos provide a little background information and three examples of how to find the center and radius of a circle, given an equation. These problems require completing the square. The last example has coefficients on x^2 and y^2!

Grab a pen and paper and work along with the video! Remember, you can pause and rewind whenever you want!

Part 1

Review of Completing the Square

Part 2

Part 3

Part 4