《Tetrabiblos》Mutual Configurations Of The SignsClaudius Ptolemy（Ashmand 英譯 1822）
The respective super-proportions (on either side of the intermediate quartile AC, formed by the one right angle AFC), will also again make the quartile AC (if there be added to the sextile, AD, the super-proportion DC, equal to the half of the sextile), and the trine AE (if there be added to the quartile AC the super-proportion CE, equal to the third part of the quartile).
段落 tetra-1-mutualconf-3public-domain (Ashmand 1822)
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