Press the green flag. Set the slider "angle" and press "Start". If you want to watch a presentation, press the "SHOW" If you want to interrupt the presentation, press the green flag.
Is repeated displacement of the side and rotation angle (right). (For each side next time is reduced by 2 steps, when one side reaches is stopped) The colors were selected at random. spiral2- https://scratch.mit.edu/projects/69674902/