noun Date: 1610 one of a pair of angles with different vertices and on opposite sides of a transversal at its intersection with two other lines:, one of a pair of angles inside the two intersected lines, one of a pair of angles outside the two intersected lines
ALTERNATE ANGLE
Meaning of ALTERNATE ANGLE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012