Simple... Put each shape in the right hole. Go to full screen to use the scroll wheel. Use the scroll wheel to rotate the shapes. They will pivot around the mouse pointer. If you don't have a scroll wheel, then just click/tap. Rotation direction will alternate with each click. If you don't have a scroll wheel, but you have a mouse and a keyboard, you can position the mouse and use the up/down keys. All art and code by me (@kriblo).
