diff --git a/T5Q2-B-FromSol1/src/ClassF.java b/T5Q2-B-FromSol1/src/ClassF.java
index cd9a8dc..80e2ce3 100644
--- a/T5Q2-B-FromSol1/src/ClassF.java
+++ b/T5Q2-B-FromSol1/src/ClassF.java
@@ -2,4 +2,4 @@ public class ClassF extends ClassE {
     public void print(int x) {
         System.out.println(x);
     }
-}
+}
\ No newline at end of file
diff --git a/T5Q3/src/Polygon.java b/T5Q3/src/Polygon.java
index 34bd4d2..2201a75 100644
--- a/T5Q3/src/Polygon.java
+++ b/T5Q3/src/Polygon.java
@@ -1,5 +1,5 @@
-public abstract class Polygon {
-//public class Polygon {
+//public abstract class Polygon {
+public class Polygon {
     public enum KindofPolygon {
         POLY_PLAIN,
         POLY_RECT,
@@ -29,14 +29,45 @@ public abstract class Polygon {
         return name;
     }
 
-//    public float calArea() {
-//        return 0;
-//    }
+    public float calArea() {
+        return 0;
+    }
 
     public void printWidthHeight( ) {
         System.out.println("Width = " + width + " Height = " + height);
     }
 
-    public abstract float calArea();
+
+
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+
+
+//    public abstract float calArea();
 
 }
\ No newline at end of file
diff --git a/T5Q3/src/TestPolygon.java b/T5Q3/src/TestPolygon.java
index 2f34292..ab056ff 100644
--- a/T5Q3/src/TestPolygon.java
+++ b/T5Q3/src/TestPolygon.java
@@ -38,6 +38,25 @@ public class TestPolygon {
 
 
 
+
+
+
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+
+
 
 
     public static void printArea(Polygon poly) {
@@ -48,11 +67,11 @@ public class TestPolygon {
     public static void main2(String[] args ) {
 
         Rectangle rect = new Rectangle("Rectangle", 3.0f, 4.0f);
-        printArea(rect);
+        printArea(rect); // dynamic binding
         rect.printWidthHeight();
 
         Triangle triangle= new Triangle("Triangle", 3.0f, 4.0f);
-        printArea(triangle);
+        printArea(triangle); // dynamic binding
         triangle.printWidthHeight();
     }
 }
\ No newline at end of file