“Ptolemy’s Theorem”的概念、定义、翻译、参考文献-科学参考

单词	Ptolemy’s Theorem
释义	Ptolemy’s Theorem Mathematics Suppose that a convex quadrilateral has vertices A, B, C, and D, in that order. Then the quadrilateral is cyclic if and only if $A B . C D + A D . B C = A C . B D .$
随便看	proportional odds model proportional reduction in error proportional spacing proportional tax proposition propositional attitude propositional calculus propositional constant propositional function propositional language propositional logic propositional quantifier proprietary protocol proprioceptor proprium prop root propulsion propylene propyl group propylitization proscriptive principle prosecutor's fallacy prosencephalon prosentential theory of truth proseptum

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