Oh, it's been a while. Only thing I can think of off the top of my head is that Spirit Science thing on youtube, but that really only mentions a few well-known ones like the flower of life or the vesica piscis.
Although now that I think about it, they probably have links to materials you could check out on the subject. So try that as a starting point. You don't need to watch their stuff, just find some video about geometry or math that they made. That'd probably have something.