How can I create diagonal lines in rectangles to create flat surfaces?

I have the following bent curves and want to create diagonal lines between them to form flat triangles. These triangles will be used to create a surface using the boundary surface component. Does anyone have a solution?


20241126_PointsAndCurves.gh (4.0 KB)

Here it is, you should pay more attention to the order of the list of points, thankfully “Sort points” can help us in this situations. If you goal is to obtain the surfaces, there’s no need in making boundary lines, you can do it with “4 Point Surface”
20241126_PointsAndCurves.gh (13.8 KB)

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Hi
20241126_PointsAndCurves01.gh (12.4 KB)

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20241126_PointsAndCurves02.gh (18.5 KB)

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Thank you for your help; it works. The reason I’m using boundary lines is that this geometry is parametric. I can shift the curve on the Y and Z axes, and in the process of creating the geometry, I get the boundary lines.

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