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Forum## Problem of the Week 992## Looking Down the RoadImagine a straight road with some uniformly spaced telephone poles alongside the road. If a photograph is taken looking straight down the road or even if one just looks down the road, the two edges of the road will converge (in the image) to a single point, and the telephone poles too will converge to that point. This means that, in the image, the spacings between the poles form a convergent infinite series. What convergent series is it? Marc Frantz, Mathematics Magazine, Oct. 1998, 71:4 313-314. © Copyright 2003 Stan Wagon. Reproduced with permission. |

9 October 2003