Mark Wagner wrote:
> 
> Given the centers and radii of two overlapping spheres, what is the equation
> for the circle where the two spheres intersect?  I need this for a project
> I'm working on.
> 
> Mark

Perhaps the Sphere FAQ can answer your question for you -
http://www.math.niu.edu/~rusin/papers/known-math/index/spheres.html

Or the math and geometry links at povray.org -
http://www.povray.org/links/3D_Resources/Math_and_Geometry_Resources_and_Information/

-- 
Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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