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// A subclass of TwoDShape for triangles.

public class Triangle11 extends TwoDShape11 {

private String style;

// A default constructor.

public Triangle11() {

// TODO Auto-generated constructor stub

super();

style = "none";

}

// Constructor for Triangle.

Triangle11(String s, double w, double h){

super(w, h, "triangle");

style = s;

}

// One argument constructor

Triangle11(double x){

super(x, "triangle"); // call superclass constructor.

style = "filled";

}

// Construct an object from an object.

Triangle11(Triangle11 ob){

super(ob); // pass object to TwoDShape constructor.

style = ob.style;

}

// Override area() for Triangle.

double area() {

return getWidth() * getHeight() / 2;

}

void showStyle() {

System.out.println("Triangle is " + style);

}

public static void main(String[] args) {

// TODO Auto-generated method stub

}

}