ninety-degree angle
nounUK /ˌnaɪnti dɪˈɡriː ˈæŋɡəl/
US /ˌnaɪnti dɪˈɡri ˈæŋɡəl/
A ninety-degree angle is a corner that looks like the letter L.
The corner of the square table forms a ninety-degree angle.
RELATED WORDS
OTHER MEANINGS
2. A turn of exactly one quarter of a full circle.
The robot turned at a ninety-degree angle to face the door.
3. A meeting point of two lines that are perpendicular to each other.
The walls meet at a ninety-degree angle in the room.
4. A standard reference angle used in building and carpentry.
The carpenter checked that the shelf was cut at a ninety-degree angle.