Maths in a minute

Want some maths and want it fast? Our Maths in a minute series explores key mathematical concepts in just a few words. From symmetry to Euclid's axioms, and from binary numbers to the prosecutor's fallacy, learn some maths without too much effort.

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Maths in a minute: Symmetry

We all instinctively recognise symmetry when we see it, but describing it in words is harder than you might think.