About a strengthened version of Erdos-Mordell inequality - Dan Stefan Marinescu and Mihai Monea In this paper, we use barycentric coordinates to prove the strengthened version of the Erdos-Mordell inequality, proposed by Dao et al in Forum Geom. ✪ ✪ ✪ ✪ ✪ Link tải tài liệu: LINK TẢI TÀI LIỆU Theo LTTK Education