Tangencies of Circles and of Spheres: Radii Solutions
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|Eugene F. Dearing; Dearing Aviation|
|New methods of finding the radii of circles tangent to three given circles, (Apollonius' Problem), and the radii of spheres tangent to four given spheres, (Apollonius' Problem in three dimensions). Download the article in zipped format, or view it online.|
|Levels:||High School (9-12), College|
|Math Topics:||Higher-Dimensional Geometry, Conic Sections and Circles|
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