Otro
A concurrency of lines joining orthocenters
Autor
Warendorff, Jay
Resumen
Let ABC be a triangle with incenter I. Let A', B' and C' be the excenters opposite A, B, and C, respectively. Then the lines joining the orthocenters of IBC and A'BC, IAC and B'AC, and IAB and C'AB are concurrent Componente Curricular::Educação Superior::Ciências Exatas e da Terra::Matemática Componente Curricular::Ensino Médio::Matemática