A=Point("A",-2.775,2.175);
B=Point("B",-0.325,-2.45);
C=Point("C",-5.75,-2.875);
M=Point("M",-3.45,-1.425);
sommets=Expression("sommets","","","","[A,B,C]","-12.05","-4.6");
P1=Point("P1","sommets[0]","0");
P2=Point("P2","sommets[1]","0");
P3=Point("P3","sommets[2]","0");
E1=Expression("E1","","","","nuage=[M];for(n=1;n<=10;n++){d=floor(3*random());nuage.push((sommets[d]+nuage[n-1])*0.5)};nuage","-12.55","4.15");