one list by -1 while disabling index wrapping. Essentially, this removes the first item from one list and the last item from the other list. Conceptually, these are your lists:
Source List: [0, 1, 2, 3, 4, 5]
Shift List 1: [0, 1, 2, 3, 4]
Shift List 2: [1, 2, 3, 4, 5]
If you input these lists into a Line component, you will connect each respective list item with the other, essentially 0-1, 1-2, 2-3, etc.
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elementary; you can see how I picked out 2 of the pentagon's sides individually. This is by far not the best way to do this.
The proper way is to use a an index pattern to pick out sides 1 & 2, 2 & 3, 3 & 4, 4 & 5, and 5 & 1, and then pass these pairs to the fillet routine. There is a way to do this but I couldn't remember the method. …