/ Thesaurus / E Synonyms of exterior angle Find synonyms for: Noun1. exterior angle, external angle, angleusage: the supplement of an interior angle of a polygonWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language