a)
if(x.a==x.b || x.a==x.c || x.b==x.c)cout << "Isoscel";
else cout << "Nu e isoscel";
b)
if(x.a==x.b && x.b==x.c) cout << "Echilateral";
else cout << "Nu e echilateral";
c)
float P=x.a+x.b+x.c;
d)
float p=P/2;
e)
float a=sqrt(p*(p-a)*(p-b)*(p-c));
f)
if(x.a+x.b+x.c == y.a +y.b + y.c) cout << "Au acelasi perimetru";
else cout << "Nu au acelasi perimetru";