Question

各位高手帮我翻译一句话把托勒密定理从不等式方向、“零圆”思想、去掉四点约束、一般的凸四边形,这四个方面推广引申得出五个命

Answer 1

Theorem put Ptolemy from the direction of inequality, "zero round" thinking and get rid 4:00 constraints, the general convex rectangular, These four aspects to promote Proposition 5 draw extended, and an example application.