Circles of Apollonius
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Apollonius' problem asks for the circle tangent to three given circles or lines. Finding a circle tangent to three circles is the most difficult form of this problem. The solution is obtained by solving three simultaneous equations,[more]
with at most eight solutions.[less]
Contributed by: Vivian Feig (March 2008)
Open content licensed under CC BY-NC-SA
"Circles of Apollonius"
Wolfram Demonstrations Project
Published: March 17 2008