Is it possible to obtain two concentric generalised circles(parallel straight lines) through inversion of two circles w.r.t a third circle?
2026-02-23 02:34:42.1771814082
Concentric circles in inversive-geometry
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Some parallel line segments are shown reflected about a unit circle centered at origin as mirror ( feature available in Geogebra). When parallel lines go to $ \infty,$ then their images inside the inversion circle tend to go to the origin, being tangent only at an infinite distance from the farthest points .. a feature of hyperbolic geometry. The images can never be concentric just as in both the Poincare's models ( semi-infinite plane or disk.)
EDIT 1:
Inversions of a set of parallel lines bear same label in the figure above.
A set of parallel lines have co-tangential circular inversions.
These inversions have either to be co-tangential or con-centric but not both at the same time !!