Trouble making triangular surfaces

[ddoh23]

tower.gh (12.8 KB)
tower.3dm (83.0 KB)

Hi, I want to make triangular surfaces on the model like the blue line on the first picture.
I tried to split the lofted surface by lines, or make individual surfaces out of points but I couldn’t.
How can I make triangular surfaces with those line and points?

[HS_Kim]

Hi,
Hope it helps you out…

tower_ReV01.gh (15.7 KB)

[ddoh23]

Thanks a lot!
감사합니다~!!!