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Gigantotron

Of course, it can also be used to shrink. Or you'd be stuck at giant-sized! Explore with this sketch to compare distances, areas and volume between two similar 3-D objects. The drawings are in modified isometric view and not drawn in perspective, which is why they look a little odd. One of four similarity stations you can find at: http://mathhombre.blogspot.com/2010/04/similarity-day.html