public void spentagonAreaFormulaTestFail()
        {
            //Arrange
            Pentagon pentagon = new Pentagon(10);

            //Act
            double result = Math.Round(pentagon.calculateArea(), 2);

            //Assert
            Assert.AreNotEqual(100, result);
        }
        public void pentagonAreaFormulaTestPass()
        {
            //Arrange
            Pentagon pentagon = new Pentagon(10);

            //Act
            double result = Math.Round(pentagon.calculateArea(), 2);

            //Assert
            Assert.AreEqual(172.05, result);
        }