Breadcrumb Home > Dictionary > Index I interior angle: Meaning and Definition of Find definitions for: inte'rior an'gle Pronunciation: [key] — Geom. Geom. an angle formed between parallel lines by a third line that intersects them. an angle formed within a polygon by two adjacent sides. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. interior interior decoration TrendingHere are the facts and trivia that people are buzzing about. Animal Group Terminology Largest Countries in the World (by Area) Current Events This Week: January 2023 State Abbreviations Dinosaur Fossils (By U.S. State!) The Chinese Zodiac ✖ Related Content Daily Word Quiz: locution Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language