http://demonstrations.wolfram.com/CirclesOfApollonius/
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
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,
Contributed by: Vivian Feig
so was that jcreator/html?
kadonagaw 5 months ago