public void Is_Not_Triangle(int x, int y, int z)
        {
            string isNotTriangle = FindTriangle.TriangleType(x, y, z);

            Assert.AreEqual("It is not a triangle", isNotTriangle);
            Console.WriteLine(isNotTriangle);
        }
        public void Is_Triangle(int a, int b, int c)
        {
            string isTriangle = FindTriangle.TriangleType(a, b, c);

            Assert.AreEqual("It is a triangle", isTriangle);
            Console.WriteLine(isTriangle);
        }