Venn — primes vs. composites
Set-theoretic illustration of natural-number classes.
Make it your own.
title "Natural numbers under 20"
set P "Prime"
set E "Even"
only "P" "3, 5, 7, 11, 13, 17, 19"
only "E" "4, 6, 8, 10, 12, 14, 16, 18"
intersect "P,E" "2"