I recently had to do this by hand to create a diagram out our property. I measured a bunch of triangles between known points, and then drew the circles in Figma before manually moving them around and getting to a decent approximation of a map. Is there a way that your code here could be given a set of those triangle measurements (ABC, BCD, ABD) and have it work out a diagram automatically?

I'm not sure I follow you. If you have a list of measurements between pairs of points, what you probably need is a code for triangulation, not a ball tree. It's not hard to do, and I can probably come up with a quick sketch. Would you like that?

Oh yes, that's a good point. I was forgetting the final purpose of the entire thing! If you think it would be possible to make a version of the triangulation solution, I'd love that. I just shared a notebook with you where I ran into a similar problem. I'd love to see anything you think you might have time to put together. Thank you, and don't worry if you get too busy to try.