Arrow keys - move circle 1 W - increase width of circle 1 S - make circle 1 smaller Space - Switch the positions of circle 1 and circle 2 Circle 1 will be drawn bolder. The circles will turn green if they intersect.
Just a simple project I made to test whether two circles intersected. I'm going to use this later. EDIT: Check out my next project, which uses this: https://scratch.mit.edu/projects/127318409