English

Conways Circle Theorem: A Short Proof Enabling Generalization to Polygons

General Mathematics 2021-11-04 v1

Abstract

John Conway's Circle Theorem is a gem of plane geometry. The six points formed by continuing the sides of a triangle beyond every vertex by the length of its opposite side, are concyclic. The theorem has attracted several proofs. We present a short proof that views the extended sides as equal tangents of the incircle, a perspective that enables generalization to polygons.

Keywords

Cite

@article{arxiv.2111.01835,
  title  = {Conways Circle Theorem: A Short Proof Enabling Generalization to Polygons},
  author = {Eric Braude},
  journal= {arXiv preprint arXiv:2111.01835},
  year   = {2021}
}

Comments

6 pages, 12 figures

R2 v1 2026-06-24T07:23:18.305Z