From Longman Dictionary of Contemporary Englishoblique angleoblique angletechnicalHM an angle that is not 90 degrees → oblique
Examples from the Corpus
oblique angle• After a few embarrassed minutes the mourners slowly departed, leaving Flaubert jammed into the ground at an oblique angle.• You can make it look two or three times thicker that way, by cutting on a really oblique angle.• Coastal Refraction alters the bearings, particularly when bearings are at an oblique angle to the coastline. 6.• One is to enter a drama at an oblique angle to the main issue. 