alternate angle


alternate angle

noun

Definition of ALTERNATE ANGLE

:  one of a pair of angles with different vertices and on opposite sides of a transversal at its intersection with two other lines:
a :  one of a pair of angles inside the two intersected lines —called also alternate interior angle
b :  one of a pair of angles outside the two intersected lines —called also alternate exterior angle

Illustration of ALTERNATE ANGLE

First Known Use of ALTERNATE ANGLE

1610

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