Floor van Lamoen, A special point in the arbelos leading to a pair of Archimedean circles,
Forum Geometricorum, 14 (2014) 253--254.

Abstract. In 2011 Quang Tuan Bui found a beautiful and simple pair of Archimedean circles, which were published on a website. From this pair we find a special point in the Arbelos leading to a related pair of Archimedean circles.

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