How to create and use classes in AS 2.0

I’m relatively new to OOP, and I’m trying to figure out how to create and use classes in AS 2.0. I thought it would be good practice to try something simple like creating a class to draw a circle or a square. I’ve been reading about AS 2.0 classes for hours and trying examples out and nothing seems to work the way I’d expect.

I’d really appreciate it if someone could either walk me through a simple example or point me in the direction of one that already exists.

Thanks in advance!

-Mathminded