Offset Curve

Offset Curve

Offset (19.0 KB)
I would like to offset the individual fragments/curves. My problem is that some curves aren’t offsetted and some ends are closed instead of open. I have marked the problem areas in the image above. Does anyone have any advice for me? In the end, I only want to have surfaces of the triangular and square shapes (second picture).

for inset use clipper :

Offset (21.4 KB)