10
votes
3answers
565 views

How can I make circle plots?

I have not idea how to call these things, but I just saw a paper with the following figure and I was wondering how one would go about doing it in LaTeX. The closest thing I saw on TeXample.net was ...
7
votes
5answers
1k views

Tangents to a circle from a point outside of it (tikz)

I'm trying to plot in TikZ the two tangents to a fixed circle passing through a given point. In some details, given an arbitrary circle centered at C with with radius r, and a point P outside of the ...