When two lines are crossed by another line (which is called the Transversal), the angles in matching corners are called corresponding angles.

Example: a and e are corresponding angles.

When the two lines are parallel Corresponding Angles are equal.

Play with it below (try dragging the points):

Example: a and e are corresponding angles.

When the two lines are parallel Corresponding Angles are equal.

Play with it below (try dragging the points):

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