Meaning & use
right angle
An angle of exactly ninety degrees, formed where two lines meet perpendicularly.
See it in a sentence
The corners of a standard sheet of paper each form a right angle.
Carpenters use a square tool to check that a joint forms a precise right angle.
A note on using this word
A right angle is often marked in diagrams with a small square symbol at the vertex instead of a curved arc.
Words with a similar meaning
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