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Two parallel lines intersected by a transversal form corresponding pairs of angles that are congruent.

Adjacent angles share a common vertex and a common ray.
Two intersecting lines form pairs of adjacent angles that are supplementary. Also, two intersecting lines form pairs of congruent angles, called vertical angles.

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 ·  Coordinate geometry

 ·  Pairs of lines

 ·  Classifying angles

 ·  Angles and
    intersecting lines

 ·  Circles


First Glance In Depth Examples Workout
First Glance   In Depth   Examples   Workout

Angles and intersecting lines