MUCTM What's My Rule?
What's My Rule #1
What's My Rule #2
What's My Rule #3
What's My Rule #4
What's My Rule #5
What's My Rule #6
What's My Rule #8
What's My Rule #9
What's My Rule #10
The next one works best if you click on the point you want to move, then use your arrow keys to move the point.