From: <HIDDEN>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Normal vector of circles
Date: Sat, 23 Oct 2010 21:54:05 +0000 (UTC)
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"Paulo " <> wrote in message <i9vkph$i54$>...
> .......
> Yes the circle that I'm using is the one that cuts a sphere in half passing through the center of the sphere, known as great circle. I just have the radius and the center point. Now it is enough Jan? If not, what information I need?
> ......
- - - - - - - -
  You need to state how this great circle is determined.  Out of the infinity of possible such great circles, which one is it?  When you tell us, I predict the normal to the plane of the circle will be obvious.

Roger Stafford