perimeter of an isosceles tri.
Posted: Mon Oct 22, 2012 8:11 pm
in an isosceles triangle $ABC$ ( $AB=AC$), $M$ in a point on $BC$ such that $BM=CM$ .$\angle BXC=3\angle BAC$ where $X$ is a point on $AM$ segment. if , $AX=10,AM=11$ , find the perimeter of the triangle .