Pythagorean tree 

This is a fractal tree, based on the kind of thinking developed by Aristid Lindenmayer (1925–1989), the theoretical biologist who proposed L-systems in 1968. There is a really good web page about this by Christopher G Jennings - https://cgjennings.ca/articles/l-systems/

I was inspird in this case by a graphic found when searching for Lindenmayer trees: https://favpng.com/png_view/case-vector-pythagoras-tree-pythagorean-theorem-right-triangle-fractal-png/ZpH2AFqk
Richard Millwood
12 July 2020