Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/36
Is Reference of Alternate exterior angles-en#Sense
Aeussere Wechselwinkel-de#Sense
Angoli alterni esterni-it#Sense
Verwisselende buitenhoeken-nl#Sense
Angles alternés externes-fr#Sense