Non - uniform offsets to 2d surface

hello all
I’m getting non-uniform offsets, one offset going inside and one offset coming outside, I want to create an offset uniformly that can go in or out. can anyone help me with this please

offset (7.5 KB)
offset doubt.3dm (55.3 KB) (3.4 KB)
ofst.3dm (314.6 KB)

Hi Rajeev, thank you for answering my doubt, ur solution is working but in some cases, its again happening, could you please look into it?

P.S:better to avoid such situation in brep normals. (110.0 KB)

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