For the #mathartchallenge today, I want you to draw a complete 4 set venn diagram. Then maybe a 5. A 6? (7 is too crazy, don't even try... or do.) Then check out some of the links below for some WILD mathematics. #MTBoS #iteachmath

So... (awesome) spoilers below here.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
A venn diagram can be rotationally symmetric if and only if the number of sets in it is PRIME. #mathartchallenge

I first came across this wandering Macalester hallways: https://www.macalester.edu/smailgallery/pastexhibits/20062007-2/

Peter Hamburg & Edit Hepp collaborated to make these images of a complete 11-set, rotationally symmetric Venn diagram with all 2^11=2,048 unique spaces. A complete image is at the link, and stages of what I saw at Macalester are below. http://www.bridgesmathart.org/art-exhibits/bridges2005/PeterHamburger.html #mathartchallenge

Here are some more links to check out related to all of this. Would love to see any more that people have.

http://laughmaths.blogspot.com/2014/10/prime-venn-diagrams.html

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.364.4433&rep=rep1&type=pdf