Login       Register      Search   All Talk > Radio 4 > Five Shapes > Listen again to Programme 1     add   Listen again to Programme 2     add   Listen again to Programme 3     add   Listen again to Programme 4     add   Listen again to Programme 5     add   Programme 1: The Cube     add   Programme 1: The Cube In the first programme, Marcus explores the cube. Why, he wonders, isnt this highly practical form used more And what does it look like in four dimensions Its perfect symmetry makes it the ideal shap     add   Programme 4: The Bagel     add   Programme 4: The Bagel The bagel, or torus, is not merely a good shape for baking. As marcus discovers its also a good shape for office complexes, codebreaking and maybe even universes. MArcus this week discovers that, as     add

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