| 单词 | angle of contingence |
| 释义 | > as lemmasangle of contingence 1. Touching, contact. angle of contingence: the infinitesimal angle between the circumference of a circle and its tangent, or between two tangents to a curve at consecutive points. line of contingence: = contingent or tangent line. ΘΚΠ the world > space > distance > nearness > [noun] > contiguity toucha1398 contingence1561 concourse1570 admotion1603 collaterage1610 contact1626 contaction1628 contiguousness1639 contingencya1646 contiguity1648 concurrence1656 osculation1669 abuttal1797 tangency1813 touching1842 1561 R. Eden tr. M. Cortés Arte Nauigation ii. xvi. sig. Fiiiv Cal it the line of contingence. 1570 H. Billingsley in tr. Euclid Elements Geom. iii. Introd. f. 80v The angle of contingence is the least of all acute rightlined angles. 1656 T. Hobbes Six Lessons i. 3 in Elements Philos. An Angle of Contingence hath its Quantity as well as that which is called simply an Angle. 1873 B. Williamson Elem. Treat. Differential Calculus (ed. 2) xvii. §219 The total curvature of an arc of a plane curve is measured by the angle through which it is bent between its extremities—that is, by the external angle between the tangents at these points, assuming that the arc in question has no point of inflexion on it. This angle is called the angle of contingence of the arc. < as lemmas |
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