So, I want a program that can be used to visually demonstrate why something works, this is vague so I will give an example of one of the features that would be great to have:
Let's say I have two circles, circle A and B, B is 3.5 times bigger than A. The two circles
I would like to constrain the distance between the center points of the two circles so they are always the same distance apart, so I can have the circle roll around the other one, and rotate as it would if rolling a dime around a quarter.
If there is any program that is capable of this it would be great :3
What EnjoysMath said. Geogebra is free, open source, and intuitive.
www.geogebra.com