"Bald Eagle" <cre### [at] netscapenet> wrote:
> diagram:
>
>
http://news.povray.org/*/attachment/%3Cweb.5a525c2aa608280b5cafe28e0%40news.povray.org%3E/radius-at-intersection.png

Thanks Bald Eagle for the explanation. I read these geometric wisdoms and i
remembered my math final examination. I disgrace myself but the theme was "all i
know about the circle". Maybe it comes back if I don't need it.

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