right angle noun
plural right angles
plural right angles
Learner's definition of RIGHT ANGLE
[count]
: an angle formed by two lines that are perpendicular to each other : an angle that measures 90°直角 -
A square has four right angles.正方形有四个直角。
-
Hold the nail at a right angle to the board.扶住这颗钉子,使之与木板成直角。
-
The two boards are joined at right angles to each other.这两块板子成直角相交。