These 9 pieces make a square. Can you construct it? The outline can be a hint if you want it![br][br]What else can you make with the pieces? I'd love to see! A couple of mine are [url=https://www.tumblr.com/mathhombre/801284399241035776/updated-the-applet-you-can-flip-the-non-symmetric?source=share]on tumblr[/url].[br][br]On the non-symmetric pieces you can click to flip them, though you can't drag reflected pieces except by using the solid points. The lower left checkbox will hide the vertices.