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Okay, I seem to have another question/problem:

I want to connect two nodes, say 1 and 2 with an arc - but so that the center of the cirle is contained in this sector of the circle.

So, is there a way to draw an (invisible) node at, say, P=({360/\n * (4 - 1)}:0.3\radius) and draw a (smooth) arc ...

Thank you very much, it does work just like I expected!

Thank you!

Hi everyone,
I'm trying to draw a circle with tikz.
I've tried to adapt this example: http://www.texample.net/tikz/examples/cycle/
My circle should satisfy the following properties:
(1) There should be, for a fixed $n$ , $n$ invisible vertices (with equal distance) on the circle line. Moreover ...