Geodesic
A generalization of Ptolemy's theorem
The Teaching of Mathematics, XXVII (2024) no. 2, p. 104 .

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In this paper, we introduce a novel generalization of the classic Ptolemy's theorem, focusing on its triangle version. We explore this generalization's implications and provide several applications that illustrate its utility in geometric problem-solving.
DOI : 10.57016/TM-QDPS2407
Classification : 97G40, G44
Keywords: Ptolemy's theorem, van Schooten's theorem, cyclic quadrilateral. 
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     title = {A generalization of {Ptolemy's} theorem},
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Quang Hung Tran; Manh Dung Tran. A generalization of Ptolemy's theorem. The Teaching of Mathematics, XXVII (2024) no. 2, p. 104 . doi : 10.57016/TM-QDPS2407. http://geodesic.mathdoc.fr/articles/10.57016/TM-QDPS2407/

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