This is a preview. Log in through your library . Abstract In this paper we present a solution to the Fall 2011 PME Journal Problem Number 1245, prepared by Stan Rabinowitz. This problem asks whether ...
Have you ever wondered why the cover of a manhole is nearly always round? Why isn’t it oval or square? Reuleaux curve based on an equilateral triangle. Reuleaux curves based on the pentagon (top) and ...
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