an angle that is not a right angle; an acute or obtuse angle.
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Origin of oblique angle
First recorded in 1685–95
Related formso·blique-an·gled, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for oblique angle
an angle that is not a right angle or any multiple of a right angle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012