public void TestTask2_3()
        {
            Figure3    figure    = new Figure3(4, 6);
            Square3    square    = new Square3(3, 4);
            Rectangle3 rectangle = new Rectangle3(5, 7);

            Assert.AreEqual(figure.Draw(), figure.GetType().Name);
            Assert.AreEqual(square.Draw(), square.GetType().Name);
            Assert.AreEqual(rectangle.Draw(), rectangle.GetType().Name);
        }