(* ::Package:: *)

tri1[name1_, name2_, name3_]:=Module[{tri,line1,line2,centerMass1,centerMass2,centerMass3,text1,text2,text3},

tri=Triangle[{{-1,0},{1,0},{0,1}}];

line1=Line[{(tri[[1]][[1]]+tri[[1]][[3]])/2, (tri[[1]][[2]]+tri[[1]][[3]])/2}];
line2=Line[{(line1[[1]][[1]]+line1[[1]][[2]])/2,(tri[[1]][[1]]+tri[[1]][[2]])/2} ];

centerMass1=(tri[[1]][[1]]+((tri[[1]][[1]]+tri[[1]][[2]])/2)+((line1[[1]][[1]]+line1[[1]][[2]])/2)+((tri[[1]][[1]]+tri[[1]][[3]])/2))/4;
text1=Text[Style[name1,Black,Bold], centerMass1];

centerMass2=(tri[[1]][[2]]+((tri[[1]][[1]]+tri[[1]][[2]])/2)+((line1[[1]][[1]]+line1[[1]][[2]])/2)+((tri[[1]][[2]]+tri[[1]][[3]])/2))/4;
text2=Text[Style[name2,Black,Bold,FontSize->9], centerMass2];

centerMass3=(tri[[1]][[3]]+((tri[[1]][[1]]+tri[[1]][[3]])/2)+((tri[[1]][[2]]+tri[[1]][[3]])/2))/3;
text3=Text[Style[name3,Black,Bold], centerMass3];

Graphics[{EdgeForm[Directive[Thick,Lighter[Blue,.5]]],White,tri,Lighter[Blue,.5],Thick, line1,line2,text1,text2,text3}]
];