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