BdMO National Secondary 2010#8
Posted: Fri Feb 22, 2019 11:16 pm
Triangle $ABC$ is right angled at $A$.Let $D$ be a point on $BC$.
$E$ and $F$ are reflections of $D$ on $AC$ and $AB$ respectively.
Prove that $[ABC]\geq [DEF]$.Find all position of $D$ for equality
(Here $[x]$ denotes the area of $x$).
$E$ and $F$ are reflections of $D$ on $AC$ and $AB$ respectively.
Prove that $[ABC]\geq [DEF]$.Find all position of $D$ for equality
(Here $[x]$ denotes the area of $x$).