Question 909005
{{{drawing(400,400,-2.5,2.5,-2.5,2.5, locate(0.05,-.05,E),
locate(-2.1,-1,B), locate(-2,1.2,A), locate(2,1.1,D), locate(2,-1,C),
green(line(-2,-1,2,1), line(-2,1,2,-1)),
line(-2,1,-2,-1), line(-2,-1,2,-1), line(2,-1,2,1), line(2,1,-2,1) )}}}
AE=5x-10, EC=2x+5
5x-10 = 2x +5
3x = 15
x = 5
AE = EC = 15
AC = 30
IF Square
BE = y/3, 
y/3 = 15, y = 45