Dupligon, a cool memory training game

In Dupligon you have to memorize shapes and then you have to redraw them from mind!
You are first shown a shape in the left box for a short time. Try to remember what it looks like. Then you have to redraw the shape in the right box. Place the points of the shape by clicking the mouse.
The size and position of the shape you redraw don't matter, only the angles!