CirclePoints
CirclePoints[n] gives the positions of n points equally spaced around the unit circle.
CirclePoints[r,n] gives the positions of n points equally spaced around a circle of radius r.
CirclePoints[{r,θ1},n] starts at angle θ1 with respect to the x axis.
CirclePoints[{x,y},rspec,n] centers the circle at {x,y}.
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