public class Triangle : IShape , IColor
public string Color {get;set;}
public double Base {get;set;}
public double Height {get;set;}
public Triangle (string n, double b, double h, string c)
public double CalculateArea()
return (Base*Height)*0.5;
bool ColorIsYellow = (Color.ToLower() == "yellow");
public static void Main()
string strname = "Triangle";
string strcolor = "blue";
Triangle triangle1 = new Triangle (strname, dbase, dheight, strcolor);
Console.WriteLine("The area is: " + triangle1.CalculateArea());
Console.WriteLine( "Is the color yellow: " + triangle1.IsYellow());