Just press go & press the draw icon in the top left! The menu has options for configuring your shape. Choose number of sides, thickness, and side length, then press draw again. Click the top right for dark/light mode toggle. I really like this animation :)
I did all the math myself for the main shape generation • Used this for centering: https://math.stackexchange.com/questions/3504316/how-to-find-the-height-of-an-odd-regular-n-gon • Used this for the light/dark rotation animation: https://gist.github.com/Fonserbc/3d31a25e87fdaa541ddf • I made this for reference: https://www.desmos.com/calculator/5yhhx5347o