Let
be a triangle, and
the midpoint of its side
. Let
be the incircle of triangle
. The median
of triangle
intersects the incircle
at two points
and
. Let the lines passing through
and
, parallel to
, intersect the incircle
again in two points
and
. Let the lines
and
intersect
again at the points
and
. Prove that
.
%V0
Let $ABC$ be a triangle, and $M$ the midpoint of its side $BC$. Let $\gamma$ be the incircle of triangle $ABC$. The median $AM$ of triangle $ABC$ intersects the incircle $\gamma$ at two points $K$ and $L$. Let the lines passing through $K$ and $L$, parallel to $BC$, intersect the incircle $\gamma$ again in two points $X$ and $Y$. Let the lines $AX$ and $AY$ intersect $BC$ again at the points $P$ and $Q$. Prove that $BP = CQ$.