If we have three circles C1 C2 C3. Consider the intersection between the external tangents of each pair of circles . Show that the three points of the intersections are collinear.
Is this a well known theorem on its own?
2026-04-01 11:18:53.1775042333
External Tangents of Circles.
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It is known as Monge's theorem. On the wikipedia page you can also find different proofs.