ˈright ˌangle noun [countable]1. an angle of 90°, like the angles at the corners of a square
2. at right angles (to something) 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 [TahlilGaran] Dictionary of Contemporary English ▲