Geometry Problems, Online Education

Geometry Problem Problem 547: Triangle, Transversal, Four Circumcircles, Concurrency

The figure shows a triangle ABC with a transversal DEF (F on the extension of AC). Prove that the circumcircles of triangles ABC, BDE, ECF, and ADF meet at a point G.


Complete quadrilateral, Circumcircles

See also:
Typography of problem 547
Sketch of problem 547

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