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The name for the Pringles shape is a hyperbolic paraboloid. The saddle shape of a Pringles chip is known in math as a hyperbolic paraboloid. Pringles were made in this shape because it allows the chips to be stacked easily and kept in place during packaging.
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Fast food giant McDonald’s serves 120 countries with about 37,855 restaurants worldwide – but you wouldn’t find a single McDonald’s joint in Antarctica. Not only does it have a McDonald’s-shaped void, but Antarctica is the only demilitarised continent worldwide. Instead, the entire continent is relegated for educational and scientific purposes
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