right angle
US /ˌraɪt ˈæŋ.ɡəl/
UK /ˌraɪt ˈæŋ.ɡəl/
1.
直角
an angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines
:
•
The two walls meet at a perfect right angle.
兩面牆以完美的直角相交。
•
Draw a line perpendicular to the base to form a right angle.
畫一條垂直於底邊的線，形成一個直角。