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A curve can be used as a visually-strong way of specifying a point – for example, as the center of a circle. This distinction is useful, for example, in discussing the ‘9-point’ puzzle – where the points are presented to the audience as ‘dots’ (“connect the dots…”) – are the ‘dots’ literally dots? If so, 3 lines suffice, but if they are only metaphorical dots, then that famous 3-line solution does not work.
keywords: Mathematics, Logic, Geometry, Linguistics