#pragma once
#include <iostream>
using namespace std;
class Triangle
{
protected:
	double x, y;
public: Triangle(double ix = 0, double iy = 0) { x = ix, y = iy; }
		virtual ~Triangle() { cout << "Deleting Triangle..." << endl; }
		virtual void area() = 0;
		virtual void obwod() = 0;
		virtual void print() = 0;

};