Apollonius' circle tactation

*To*: mathgroup at smc.vnet.net*Subject*: [mg129611] Apollonius' circle tactation*From*: "Dr. Heinz Schumann" <schumannph at web.de>*Date*: Tue, 29 Jan 2013 02:44:18 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-newout@smc.vnet.net*Delivered-to*: mathgroup-newsend@smc.vnet.net

Dear Colleagues, does exist a veritable and short Mathematica solution of the problem to calculate the midpoint coordinates and the radius of a third (fourth) circle tangent to two (three) given circles already mutual tangent. Best Heinz Schumann

**Follow-Ups**:**Re: Apollonius' circle tactation***From:*Tomas Garza <tgarza10@msn.com>