| 单词 | extreme and mean ratio |
| 释义 | > as lemmasextreme and mean ratio b. Mathematics. extreme and mean ratio (or †proportion): = Greek ἀκρὸς καὶ μέσος λόγος (see quots.). ΚΠ 1570 H. Billingsley tr. Euclid Elements Geom. vi. f. 153v A right line is sayd to be deuided by an extreme and meane proportion, when the whole is to the greater part, as the greater part is to the lesse. 1827 O. Gregory Hutton's Course Math. (ed. 9) I. 370 Let A B be the given line to be divided in extreme and mean ratio. < as lemmas |
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