| 单词 | adjacent angle |
| 释义 | > as lemmasadjacent angle adjacent angle n. Mathematics an angle positioned side by side with another one; spec. each of the pair of angles formed on a straight line by another line which meets or intersects it. ΚΠ 1645 T. Urquhart Trissotetras sig. F One of the Ambients with an Adjacent angle is given, and the subtendent, an opposite angle, or the other containing side is required. 1723 J. Hodgson Syst. Math. I. iv. iv. 57 The Radius, the Sine of the Hypothenuse, the Sine of one of the adjacent Angles, and the Sine of the opposite Side or Leg, are directly proportional. 1827 O. Gregory Hutton's Course Math. (ed. 9) I. 317 The sum of the two adjacent angles dac and dab is equal to two right angles. 1916 W. Wells & W. W. Hart Plane & Solid Geom. 15 The sum of all the successive adjacent angles around a point on one side of a straight line is one straight angle. 2007 R. N. Aufmann et al. Algebra (ed. 4) iii. 208 Adjacent angles of intersecting lines are supplementary angles. < as lemmas |
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