It is back! This one is an original problem of mine. Have fun!

\(BEDC\) is quadrilateral satisfying \(BE=DC\), the diagonals interset at \(F\) . Let \(G,H\ne F\) be on the segments \(CE,BD\) such that \(EG=CF,BH=DF\). If \(BE\cap DC=A\), prove that \(AH,AG\) are isogonals wrt \(\angle BAC\).

## Comments

Sort by:

TopNewestSorry for being off topic, but I have no knowledge of certain areas of advanced geometry like Homothety, which are not in wikis. I was wondering if there was a way you could provide me resources, Xuming. Thanks. – Sal Gard · 1 year, 1 month ago

Log in to reply

Eduardo Elael, were are your??? – Marciø Aleksandravičius · 1 year, 5 months ago

Log in to reply