View source for Apollonius problem

The problem of constructing, in a given plane, a circle tangent to three given circles. The problem is solved by the method of [[Inversion|inversion]]. The circle representing the solution of this problem is known as the Apollonius circle. The problem was named after [[Apollonius]] (3rd century B.C.).

====References====
<table><TR><TD valign="top">[1]</TD> <TD valign="top"> , ''Encyclopaedia of elementary mathematics'' , '''1''' , Moscow-Leningrad  (1951–1963)  (In Russian)</TD></TR></table>



====Comments====


====References====
<table><TR><TD valign="top">[a1]</TD> <TD valign="top">  H.F. Baker,   "Principles of geometry" , '''4''' , F. Ungar  (1963)</TD></TR></table>
[[Category:Geometry]]