Wolfram Demonstrations Project
7709

Bankoff Circle

Inside a semicircle of radius , construct semicircles of radii and with bases on the first semicircle. Find the point on each of the smaller semicircles for which there is a circle tangent to each of the three semicircles. The circle through (, 0) and the tangent points of the smaller semicircles is the Bankoff circle.

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"Bankoff Circle" from the Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/BankoffCircle/
Contributed by: Jay Warendorff

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