The answer is 24, how to get it by GH? [image] 1.gh (2.1 KB)

Here is one solution [Triangles_240107-RG] Triangles_240107-RG.gh (16.6 KB)

here is another solution that uses geometry only to define adjacency, the traverses the graph recognizing in-line-nodes as single edges (which I believe is the most pressing issue, or at least it was for me when trying to just traverse the graph :slight_smile: ) Python code taken from here: python …

The answer is nine. :rofl: [triangles_2024Jan7a] triangles_2024Jan7a.gh (13.3 KB) P.S. Wait, only five of the fragments from SrfSplit are triangles: [triangles_2024Jan7b] triangles_2024Jan7b.gh (17.0 KB) The goal of this thread needs clarification :question:

Took me quite awhile to understand the objective here, and then I finally understood @inno’s solution . So I started with his code and added a little bit to his Python to output his list of triangles as ‘a’: trishapes = [] print('--- triangles ---') for triangle in sorted(triangles): print(tria…

well, consider that the whole code comes from the big brains @ stackoverflow, not from mine :slight_smile: [image] inno: Python code taken from here: python - Counting triangles in a hexagon - Stack Overflow the interesting part is indeed to use geometry just to get the initial data, and de…

[image] inno: well, consider that the whole code comes from the big brains @ stackoverflow, not from mine :slight_smile: Still, well done! Python has some great tools for combinations: [image] Find all combinations that add up to a given number Grasshopper [Combos…

[image] Joseph_Oster: Hadn’t thought about this that way… :thinking: it think it mostly depends whether it’s a one-shot well-definite problem, or a solution for a “general case” I believe the problem you linked can be identified in the class of “coin change problem”, bruteforcing it works wh…

[image] inno: but if you have 15 thousand lines then I’d go for a graph-based approach :slight_smile: Unfortunately, graph theory is missing from my education and experience. I remember the coin change problem, from way back (~52 years!) in my introductory Basic and Fortran classes. That vid…

I use the same Python code shared by @inno with a little modification I test shapes from these videos: [Counting Figures Tricks |Reasoning Tricks | How To Find Number Of Triangles] [Counting Number of Triangles In a Figure || Best Trick to count number of triangles || Ma…

How to get the amount of triangles?

Grasshopper

Joseph_Oster January 7, 2024, 2:57pm 8

Still, well done! Python has some great tools for combinations:

Hadn’t thought about this that way…

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How to get the amount of triangles?

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