/// <summary>
        /// This method prompts user for height of triangle
        /// </summary>
        internal static int SetHeightOfTriangle()
        {
            var heightOfTriangle = UserInputGathering.GetIntergerInput("Please enter the height of star triangle");

            if (UserInputValidation.IsValidHeightofTriangle(heightOfTriangle) == false)
            {
                throw new InvalidOperationException(" ");
            }

            return(heightOfTriangle);
        }