Longman Dictionary of Contemporary English homepage

right angle

noun
     
Related topics: Maths
right angle [countable]
1HM an angle of 90°, like the angles at the corners of a square
2

at right angles (to something)

HM if two things are at right angles, they make a 90° angle where they touch:
Hold the brush at right angles to the surface.
right-angled adjective:
a right-angled bend

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary