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
1350-1400;Middle English
Related forms
right-angled, adjective
Examples from the web for right angle
The right colic flexure is situated in the upper and right angle of intersection of the subcostal and right lateral lines.
Intersection crash data indicates signalized intersections have a high number of right angle and head-on left turn crashes.
If the referee is in the right position with the right angle, he has a much better chance to make the right call.
Rotate it through a right angle, or a multiple of a right angle, and it is indistinguishable from its unrotated self.
When you get closer, you see that each horizontal section is made up of two pieces that converge in a right angle.
And talk about gentlemen: at the end of a song, they bowed deeply, almost to a right angle.
These may be observed at any time of day if you are oriented at the right angle so that the reflections can occur.
Start with two straight runs with a right angle turn in between them.
British Dictionary definitions for right angle
right angle
noun
1.
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
2.
at right angles, perpendicular or perpendicularly
related
adjective orthogonal
Derived Forms
right-angled, adjective
right angle in Science
right angle
(rīt) An angle having a measure of 90°.
right angle in Culture
right angle definition
An angle measuring ninety degrees, formed by the intersection of two perpendicular lines. (Compareacute angleandobtuse angle.)