Click the green flag. Pick a number between 5 and 25. This will be the number of points of the star drawn. Pick the number of iterations to try. The sprite will start to draw the result of each iteration. Observe how not every iteration will give a the star! If you see an iteration that you want, click (long hold) on the mouse and the code will stop. Star Angle will display the interior angle used for the shape.
Formula: Star Angle = 360 degrees * num of iteration / num of points of the star.