出典:Wiktionary
出典:『Wiktionary』 (2026/08/01 21:19 UTC 版)
right angle (plural right angles)
出典:『Wiktionary』 (2008/06/02 03:47 UTC 版)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/02 23:21 UTC 版)
In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two halves of a straight line. More precisely, if a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles. As a rotation, a right angle corresponds to a quarter turn (that is, a quarter of a full circle).
| ・Right angle | |
| ・Rope | |
| ・Virtual PBX | |
| ・beached | |
| ・CAPP | |
| ・chocnut | |
| ・Woolfolk | |
| ・string along | |
| ・Chengdu | |
| ・exposes |