Definition of

Alternate Exterior Angles

When two lines are crossed by another line (the Transversal), a pair of angles
• on each of those two lines
• on opposite sides of the transversal
• but outside those two lines
are called Alternate Exterior Angles.

When the two lines are parallel Alternate Exterior Angles are equal.

There are actually two pairs, click on "Alternate Exterior Angles" below to see.

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