diff --git a/Chapter7/Shape5.java b/Chapter7/Shape5.java
new file mode 100644
index 0000000..f7548ef
--- /dev/null
+++ b/Chapter7/Shape5.java
@@ -0,0 +1,23 @@
+
+public class Shape5 {
+
+	public static void main(String[] args) {
+		
+		Triangle5 t1 = new Triangle5("filled", 4.0, 4.0);
+		Triangle5 t2 = new Triangle5("Outlined", 8.0, 12.0);
+		
+		System.out.println("Info for t1: ");
+		t1.showStyle();
+		t1.showDim();
+		System.out.println("Area is " + t1.area());
+		
+		System.out.println();
+		
+		System.out.println("Info for t2: ");
+		t2.showStyle();
+		t2.showDim();
+		System.out.println("Area is " + t2.area());
+
+	}
+
+}
diff --git a/Chapter7/Shape6.java b/Chapter7/Shape6.java
new file mode 100644
index 0000000..95ac900
--- /dev/null
+++ b/Chapter7/Shape6.java
@@ -0,0 +1,16 @@
+
+public class Shape6 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+
+		Triangle6 t1 = new Triangle6();
+
+		System.out.println("Info for t1: ");
+		t1.showStyle();
+		t1.showDim();
+		System.out.println("Area is " + t1.area());
+
+	}
+
+}
diff --git a/Chapter7/Triangle6.java b/Chapter7/Triangle6.java
new file mode 100644
index 0000000..92bf2dc
--- /dev/null
+++ b/Chapter7/Triangle6.java
@@ -0,0 +1,21 @@
+
+public class Triangle6 extends TwoDShape6 {
+	
+	private String styleString;
+	
+	// A default constructor. 
+	public Triangle6() {
+	//	super();
+		
+		styleString = "none";
+	}
+	
+	double area() {
+		return getWidth() * getHeight() / 2;
+	}
+	
+	void showStyle() {
+		System.out.println("Triangle is " + styleString);
+	}
+
+}
diff --git a/Chapter7/TwoDShape6.java b/Chapter7/TwoDShape6.java
new file mode 100644
index 0000000..8a772ea
--- /dev/null
+++ b/Chapter7/TwoDShape6.java
@@ -0,0 +1,45 @@
+// Add more constructors to TwoDShape
+public class TwoDShape6 {
+	
+	private double width; 
+	private double height; 
+	
+	// A default constructor
+	public TwoDShape6() {
+		
+		width = height = 0.0;
+	}
+	
+	// Parameterized constructor. 
+	TwoDShape6(double w, double h){
+		width = w;
+		height = h;
+	}
+	
+	// Construct object with equal width and height.
+	TwoDShape6(double x){
+		width = height = x;
+	}
+	
+	// Accessor methods for width and height.
+	double getWidth() {
+		return width;
+	}
+	
+	double getHeight() {
+		return height;
+	}
+	
+	void setWidth(double w) {
+		width = w; 
+	}
+	
+	void setHeight(double h) {
+		height = h;
+	}
+	
+	void showDim() {
+		System.out.println("Width and height are " + width + " and " + height);
+	}
+
+}