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Concyclic Points of Tangency (Posted on 2013-07-02) Difficulty: 3 of 5

Consider four circles each of which is
externally tangent to two of the others.

Prove that the four points of tangency
are concyclic.

See The Solution Submitted by Bractals    
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  Subject Author Date
re: SolutionBractals2013-07-04 14:29:19
SolutionSolutionJer2013-07-04 01:27:18
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