I want a clickable 3-circle Venn diagram (in a box labeled U), where I can shade each region by clicking. I have googled "venn diagram maker free online" and looked at about a dozen of these sites. Many want me to sign in, which should not be necessary. None of the others are what I want.
If I knew how to program websites, maybe I could make my own.
Does anyone know of a site like this?
I want to be able to make lots of diagrams, all in the same style, for teaching, quizzes, and tests. Basically, I just want to be able to click which regions will be shaded (also being able to label the circles would be nice, they usually need to be A, B, C). I'd like two circles on top and one below, because that's how the diagrams are in the text I'm using (discrete math).
[A year or two ago, I was trying to make my own on drawing sites. Those had issues too. On many, the overlapping circles hid each other. On many I could only shade a whole circle. A drawing site that makes this easy would be just as helpful as a dedicated venn-diagram-maker.]