Circles (A45a) and (A45b): Second QTB Powerian pair

Definition

Let J be the point where the circle on diameter AO2 meets CD, and also the circle on diameter BO1 meets CD. The circles tangent to each other at J and both tangent to (O) are the Archimedean circles (A45a) and (A45b), another Powerian pair. They are named after their author Quang Tuan Bui. [Bui 2007]


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