/ Thesaurus / E Synonyms of equiangular triangle Find synonyms for: Noun1. equilateral triangle, equiangular triangle, triangle, trigon, trilateral, regular polygonusage: a three-sided regular polygonWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language