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How do I make a net for a torus?

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For extra credit we can bring in a net for a torus (doughnut) by the end of next week. (A net is where you have a 2-D figure that you can fold into a 3-D figure). Does anyone know how to make one??? One way our book showed was to roll a piece of paper into a cylinder and bend it around, but that doesn't work very well because the paper dents in. I've heard you make a flower or something, but am not quite sure how to do it and I need this extra credit! Any suggestions greatly appreciated!!!