How to get the amount of ALL the parallelograms?

The examples of parallelogram are showed as below:

How to get the amount of ALL the parallelogram by GH?
Untitled.dxf (173.5 KB)

You mean the number of all possible parallelograms?

Yes, exactly.


Nice challenge :slight_smile: no immediate ideas about how to do this with Grasshopper but why do you ask - what underlying problem are you trying to solve and why? Are you looking for a general solution for any regular triangular mesh with all identical triangles inside?

maybe something related:

Edit. just saw the author is the same, so probably related