Path: utzoo!utgpu!watmath!iuvax!rutgers!columbia!cs!beshers From: beshers@cs.cs.columbia.edu (Clifford Beshers) Newsgroups: comp.graphics Subject: Re: Tangents to Three Circles Message-ID: Date: 8 Aug 89 20:38:57 GMT References: <859@mrsvr.UUCP> Organization: Columbia University Computer Science Lines: 17 In-reply-to: hallett@mrsvr.UUCP's message of 8 Aug 89 18:49:12 GMT In article <859@mrsvr.UUCP> hallett@mrsvr.UUCP (Jeff Hallett) writes: I have an interesting geometry problem. Given three circles, I need to be able to find a circle tangent to all three. I realize that, as specified, there are upto 6 possible solutions, but there is always one. Do you mean, for any 3 circles a, b and c there exists a circle d that is tangent to each of a, b and c? What about the case where a, b and c share the same center, but each has a radius different from the other. I can't visualize a circle d tangent to all three. -- ----------------------------------------------- Cliff Beshers Columbia University Computer Science Department beshers@cs.columbia.edu