Online Geometry Problems

Online Geometry Problem 827: Brianchon Corollary, Circumscribed Hexagon, Tangency Points, Diagonal, Opposite Sides, Concurrent lines. Level: High School,  College, Mathematics Education

The figure shows a circumscribed hexagon ABCDEF with the tangency points G, H, J, K, L, and M. Prove that AD, GK, and MJ are concurrent at N.

 

Brianchon Corollary in an circumscribed hexagon

 

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