Triangle, Medians, Six Circumcenters Concyclic

Proposition
Medians AD, BE, and CF split a triangle ABC into six smaller triangles. Prove that their circumcenters O1, O2, O3, O4, O5, and O6 are concyclic (lie on a circle).



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Triangle, Medians, Six Circumcenters Concyclic. Level: High School, SAT Prep, College geometry

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