id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejpam-3605	Aliyev, Samed Jahangir; Hamidova, Shalala A.; Abdullayeva, Goncha Z.	Some Applications of Ptolemy's Theorem in Secondary School Mathematics	2020	5	.pdf	application/pdf	1209	60	66	(4) Applying Ptolemy’s theorem to the rectangles ACA1C1 ,A1B1C1B ,ABCC1 ,ABCA1, respectively, we obtain AA1 · CC1 = AC ·A1C1 + AC1 · CA1, (5) A1C1 ·BB1 = BA1 ·B1C1 + A1B1 ·BC1, (6) AC ·BC1 = AB · CC1 + BC ·AC1, (7) AC ·BA1 = AB · CA1 + BC ·AA1. 2020 Mathematics Subject Classifications: 97G10, 97G40 Key Words and Phrases: Ptolemy’s theorem, inscribed rectangle, regular heptagon, inscribed hexagon.	cache/ejpam-3605.pdf	txt/ejpam-3605.txt