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 Related Terms
 Congruent Angles:  Angles that have exactly the same measures.
Congruent: Having the same size, shape and measure.
Alternate Interior Angles: Alternate interior angles are pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on opposite sides of the transversal and are in between the other two lines.
Vertical Angles: Two nonadjacent angles formed by intersecting lines or segments. Also called opposite angles.