diff --git a/OpenGL1/Main.cpp b/OpenGL1/Main.cpp
index 29ba40e..8ac4d7a 100644
--- a/OpenGL1/Main.cpp
+++ b/OpenGL1/Main.cpp
@@ -2,8 +2,15 @@
 #include <GL/freeglut.h>
 
 using namespace std;
+
+/* Prototypes */
+void obj_flag(void);
+void obj_cube(void);
 void obj_cube2(void);
+
 float rotation = 0;
+int width = 800;
+int height = 600;
 
 void display() 
 {
@@ -12,7 +19,7 @@ void display()
 
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
-	gluPerspective(90, 1, 0.5f, 20.0f);
+	gluPerspective(90, (float)width/height, 0.5f, 20.0f);
 
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();
@@ -22,7 +29,8 @@ void display()
 
 	glRotatef(rotation, 0, 1, 0);
 	glRotatef(rotation/2, 0, 0, 1);
-	obj_cube2();
+
+	obj_cube();
 
 	glutSwapBuffers();
 }
@@ -39,10 +47,16 @@ void keyboard(unsigned char key, int x, int y)
 		exit(0);
 }
 
+void resize(int w, int h)
+{
+	width = w;
+	height = w;
+}
+
 int main(int argc, char *argv[]) 
 {
 	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
-	glutInitWindowSize(800, 600);
+	glutInitWindowSize(width, height);
 
 	glutInit(&argc, argv);
 	glutCreateWindow("Hello World");
@@ -51,6 +65,7 @@ int main(int argc, char *argv[])
 	glutDisplayFunc(display);
 	glutIdleFunc(idle);
 	glutKeyboardFunc(keyboard);
+	glutReshapeFunc(resize);
 
 	glutMainLoop();
 	return 0;
@@ -143,5 +158,84 @@ void obj_cube2()
 	glVertex3f(0, 0, 1);
 	glVertex3f(1, 0, 1);
 	glEnd();
+}
 
+void obj_cube()
+{
+	//Side 1 : Green
+	glBegin(GL_QUADS);
+	glColor3f(0.0f, 1.0f, 0.0f);
+	glVertex3f(-1, -1, -1);
+	glVertex3f(-1, 1, -1);
+	glColor3f(0.5f, 1.0f, 0.5f);
+	glVertex3f(1, 1, -1);
+	glVertex3f(1, -1, -1);
+	glEnd();
+
+	//Side 2 : Red
+	glBegin(GL_QUADS);
+	glColor3f(1.0f, 0.0f, 0.0f);
+	glVertex3f(-1, -1, 1);
+	glVertex3f(-1, 1, 1);
+	glColor3f(1.0f, 0.5f, 0.5f);
+	glVertex3f(1, 1, 1);
+	glVertex3f(1, -1, 1);
+	glEnd();
+
+	//Side 3 : Blue
+	glBegin(GL_QUADS);
+	glColor3f(0.0f, 0.0f, 1.0f);
+	glVertex3f(-1, -1, -1);
+	glVertex3f(-1, -1, 1);
+	glColor3f(0.5f, 0.5f, 1.0f);
+	glVertex3f(-1, 1, 1);
+	glVertex3f(-1, 1, -1);
+	glEnd();
+
+	//Side 4 : Yellow
+	glBegin(GL_QUADS);
+	glColor3f(1.0f, 1.0f, 0.0f);
+	glVertex3f(1, -1, -1);
+	glVertex3f(1, -1, 1);
+	glColor3f(1.0f, 1.0f, 0.5f);
+	glVertex3f(1, 1, 1);
+	glVertex3f(1, 1, -1);
+	glEnd();
+
+	//Side 5 : Purple
+	glBegin(GL_QUADS);
+	glColor3f(1.0f, 0.0f, 1.0f);
+	glVertex3f(-1, -1, -1);
+	glVertex3f(-1, -1, 1);
+	glColor3f(1.0f, 0.5f, 1.0f);
+	glVertex3f(1, -1, 1);
+	glVertex3f(1, -1, -1);
+	glEnd();
+
+	//Side 6 : Light blue
+	glBegin(GL_QUADS);
+	glColor3f(0.0f, 1.0f, 1.0f);
+	glVertex3f(-1, 1, -1);
+	glVertex3f(-1, 1, 1);
+	glColor3f(0.5f, 1.0f, 1.0f);
+	glVertex3f(1, 1, 1);
+	glVertex3f(1, 1, -1);
+	glEnd();
+}
+
+void obj_flag()
+{
+	glBegin(GL_TRIANGLES);
+	glColor3f(1.0f, 0.7f, 1.0f);
+	glVertex3f(0, 0, 0);
+	glVertex3f(0, 1, 0);
+	glVertex3f(1, 1, 0);
+	glEnd();
+
+	glBegin(GL_TRIANGLES);
+	glColor3f(0.1, 1, 0.1);
+	glVertex3f(0, 0, 0);
+	glVertex3f(1, 1, 0);
+	glVertex3f(1, 0, 0);
+	glEnd();
 }
\ No newline at end of file