Inconsistency in trim?

 From:  geekmidget (HF)
11603.1 
As part of my tests with MoI3D v5, I made an arc of 300 degrees and trimmed it with a circular array of lines, to divide it in evenly spaced sectors.
However for some odd reason, additional interpolation points appeared at a couple of positions.
I found that odd so I repeated the test with an arc of 270 degrees and no such points were added.
Why the inconsistency?

EDITED: 29 Nov 2024 by HF

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