noun plural
: any pair of angles each of which is on the same side of one of two lines cut by a transversal and on the same side of the transversal
noun plural
: any pair of angles each of which is on the same side of one of two lines cut by a transversal and on the same side of the transversal
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012