| 单词 | straight angle |
| 释义 | > as lemmasstraight angle 5. straight angle. extracted from straightadj.n.adv.ΘΚΠ the world > space > shape > angularity > [noun] > angle or corner > right angle right anglec1400 right corner1548 rectangle1560 quadrate1568 straight angle1601 the world > relative properties > number > geometry > angle > [noun] > right angle right anglec1400 rectangle1560 quadrate1568 straight angle1601 rect angle1605 1601 P. Holland tr. Pliny Hist. World I. ii. xviii. 13 Those raies that come sidelong..give but a darke and dim light..in comparison of them that fall directly with streight angles. 1707 J. Mortimer Whole Art Husbandry 431 The best Figure for a Kitchin-Garden..is a Square of straight Angles. b. In modern use: an angle of 180°. ΚΠ 1889 N. F. Dupuis Elem. Synthetic Geom. §36. 17 One-half of a circumangle is a straight angle, and one-fourth of a circumangle is a right angle. < as lemmas |
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