Junghyun Lee, Minyoung Hwang, and Cheolwon Bae,
Some loci in the animation of a Sangaku diagram,
Forum Geometricorum, 16 (2016) 187--191.
Abstract. In a symmetric partition of a regular n-gon into n congruent subtriangles and a regular n-gon in the center, we determine the loci of the incenter and points of tangency of the incircle a subtriangle.
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