Inversion in a Circle
Ever wondered what the equation is for moving points from inside of a circle to outside of a circle?
To see how this works, move the point P.
O is the circle's center, and P is any point in the circle. P' is the inverse of P, and displays what happens to a point when you invert the circle.
Explore the way point P and P' interact with each other and with point O.
Click the check box 'view line'. Line e will appear, move P along this line to view how P' changes in relation to P.