I need to step away from the keyboard, this thing has gotten carried away… 
I started with the intention of creating “random” diagonals and horizontal fragments with the intention of applying yesterday’s version ‘25a’ to the result. At some point I realized that wasn’t needed because it was already looking similar to your image. There are reduce sliders (blue groups) that randomly reduce diagonals, horizontal lines, triangles and horizontal line segments.
The orange group (bottom left) supplies prime numbers as seeds. A little crazy! 
triangles_2024Jan26b.gh (31.5 KB)