static void Main(string[] args) { Console.WriteLine("Enter base1, base2 and height of a trapezoid"); double b1 = Double.Parse(Console.ReadLine()); double b2 = Double.Parse(Console.ReadLine()); double h = Double.Parse(Console.ReadLine()); trapezoid area = new trapezoid(b1, b2, h); Console.WriteLine(area.area()); Console.ReadKey(); }