diff --git a/u02/main.c b/u02/main.c
index d89fef7..1e0237e 100644
--- a/u02/main.c
+++ b/u02/main.c
@@ -35,28 +35,28 @@ typedef struct {
 	Triangle t2;
 } TriangleRect;
 
-void createRect(GLfloat* vertexArray, GLfloat posx, GLfloat posy, GLfloat width, GLfloat height) {
-	vertexArray[0] = posx;
-	vertexArray[1] = posy;
+void createRect(TriangleRect* rect, GLfloat posx, GLfloat posy, GLfloat width, GLfloat height) {
+	rect->t1.p1.x = posx;
+	rect->t1.p1.y = posy;
 
-	vertexArray[2] = posx + width;
-	vertexArray[3] = posy;
+	rect->t1.p2.x = posx + width;
+	rect->t1.p2.y = posy;
 
-	vertexArray[4] = posx;
-	vertexArray[5] = posy + height;
+	rect->t1.p3.x = posx;
+	rect->t1.p3.y = posy + height;
 
-	vertexArray[6] = posx + width;
-	vertexArray[7] = posy;
+	rect->t2.p1.x = posx + width;
+	rect->t2.p1.y = posy;
 
-	vertexArray[8] = posx + width;
-	vertexArray[9] = posy + height;
+	rect->t2.p2.x = posx + width;
+	rect->t2.p2.y = posy + height;
 
-	vertexArray[10] = posx;
-	vertexArray[11] = posy + height;
+	rect->t2.p3.x = posx;
+	rect->t2.p3.y = posy + height;
 }
 
-void createCenterRect(GLfloat* vertexArray, GLfloat posx, GLfloat posy, GLfloat width, GLfloat height) {
-	createRect(vertexArray, posx - width / 2, posy - height / 2, width, height);
+void createCenterRect(TriangleRect* rect, GLfloat posx, GLfloat posy, GLfloat width, GLfloat height) {
+	createRect(rect, posx - width / 2, posy - height / 2, width, height);
 }
 
 void init(void) {
@@ -134,10 +134,10 @@ void init(void) {
 
 	TriangleRect triangleVertices[4];
 
-	createCenterRect((GLfloat*)&triangleVertices[0], -0.2f, 0.0f, 0.1f, 1.2f);
-	createCenterRect((GLfloat*)&triangleVertices[1],  0.2f, 0.0f, 0.1f, 1.2f);
-	createCenterRect((GLfloat*)&triangleVertices[2],  0.0f, 0.0f, 0.3f, 0.1f);
-	createCenterRect((GLfloat*)&triangleVertices[3],  0.0f, -0.8f, 0.5f, 0.1f);
+	createCenterRect(&triangleVertices[0], -0.2f, 0.0f, 0.1f, 1.2f);
+	createCenterRect(&triangleVertices[1],  0.2f, 0.0f, 0.1f, 1.2f);
+	createCenterRect(&triangleVertices[2],  0.0f, 0.0f, 0.3f, 0.1f);
+	createCenterRect(&triangleVertices[3],  0.0f, -0.8f, 0.5f, 0.1f);
 
 
 	GLuint triangleVertexBufferObject;
@@ -156,7 +156,7 @@ void init(void) {
 		2,
 		GL_FLOAT,
 		GL_FALSE,
-		2 * sizeof(GLfloat),
+		sizeof(Point),
 		0
 	);
 	glEnableVertexAttribArray(0);