void type (triangle T) {
	double ab = length (T.a, T.b);
	double bc = length (T.b, T.c);
	double ac = length (T.a, T.c);
	double eps = 0.00000000001;
	if ((abs (ab*ab - bc*bc - ac*ac) < eps) || (abs (bc*bc - ab*ab - ac*ac) < eps) || (abs (ac*ac - ab*ab - bc*bc) < eps))
		cout << "Прямоугольный" << (abs (ab*ab - bc*bc - ac*ac) < eps) << " " << (abs (bc*bc - ab*ab - ac*ac) < eps) << " HUI" << (abs (ac*ac - ab*ab - bc*bc) < eps) << endl;
	if ((ab - bc < eps) && (bc - ac < eps))
		cout << "Равносторонний" << endl;
	if ((ab - bc < eps) || (bc - ac < eps) || (ac - ab < eps))
		cout << "Равнобедренный" <<endl;

}