Luis González, On a triad of circles tangent to the circumcircle and the sides at their midpoints,
Forum Geometricorum, 11 (2011) 145--154.

Abstract.   With synthetic methdos, we study, for a given triangle ABC, a triad of circles tangent to the arcs BC, CA, AB of its circumcircle and the sides BC, CA, AB at their midpoints.

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