right angle
noun
the angle formed by two radii of a circle that are drawn to the extremities of an arc equal to one quarter of the circle; the angle formed by two perpendicular lines that intersect; an angle of 90°.
Origin of right angle
Middle English word dating back to 1350–1400
OTHER WORDS FROM right angle
right-an·gled, adjectiveWords nearby right angle
Example sentences from the Web for right angle
British Dictionary definitions for right angle
right angle
noun
the angle between two radii of a circle that cut off on the circumference an arc equal in length to one quarter of the circumference; an angle of 90° or π/2 radians
at right angles
perpendicular or perpendicularly
Other words from right angle
Related adjective: orthogonalDerived forms of right angle
right-angled, adjectiveScientific definitions for right angle
right angle
[ rīt ]
An angle having a measure of 90°.
Cultural definitions for right angle
right angle
An angle measuring ninety degrees, formed by the intersection of two perpendicular lines. (Compare acute angle and obtuse angle.)