We found 6 dictionaries that define the word internal angles:

General (6 matching dictionaries)

1. internal angles: Merriam-Webster
2. internal angles: Vocabulary.com
3. internal angles: Wordnik
4. Internal angles: Dictionary.com
5. internal angles: FreeDictionary.org
6. Internal angles: TheFreeDictionary.com

(Note: See internal_angle as well.)

Definitions from Wiktionary (internal angle) ▸ noun:  Synonym of interior angle ▸ Also see internal_angle Phrases: Internal and external angles, more... ▸ Words similar to internal angles ▸ Usage examples for internal angles ▸ Idioms related to internal angles ▸ Wikipedia articles (New!) ▸ Words that often appear near internal angles ▸ Rhymes of internal angles ▸ Invented words related to internal angles