Right angle

Definition of Right angle

one formed by a right line falling on another perpendicularly, or an angle of 90° (measured by a quarter circle).
The angle formed by one line meeting another perpendicularly, as the angles ABD, DBC.
(Spherics) A spherical angle included between the axes of two great circles whose planes are perpendicular to each other.

See also: Angle Right Right

Related Words

angle, oblique angle
Word:

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-Right angle-
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