Consortium for Mathematics and its Applications

Product ID: Geometers Corner
Supplementary Print
High School

A Circle Tangent Medley

Author: Jon Choate


One of the classic problems in ancient geometry is: given three circles A, B, and C that are pairwise tangent, find two more circles each tangent to circles A, B, and C. These two circles came to be known as Soddy Circles. This problem sounded to me like a great one to solve using GeoGebra or any other construction package and a computer algebra system. What follows is a solution.
©2020 by COMAP, Inc.
Consortium 118
2 pages

Mathematics Topics:

  • Geometry

Application Areas:

  • GeoGebra

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