# Trisecting an Angle Using a Lemniscate

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The angle to trisect, say , is between the longer leg of the carpenter's square (the brown "L" shape) and the polar axis . Translate the carpenter's square so that it touches the curve at the point . The angle between the radius vector and the polar axis is one-third of the given angle .

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Contributed by: Izidor Hafner (February 2013)

Open content licensed under CC BY-NC-SA

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