Einheitskreis

== German == === Etymology === From Einheit +‎ -s- +‎ Kreis. === Pronunciation === IPA(key): /ˈaɪ̯n.haɪ̯tsˌkraɪ̯s/ === Noun === Einheitskreis m (strong, genitive Einheitskreises, plural Einheitskreise) (trigonometry) unit circle