Vertically opposite, Opposite angles at intersection equal, Alternate angles, Angles on alternate sides equal, Corresponding angles, Matching positions angles equal, Transversal, Line crossing two other lines, Parallel lines, Lines that never meet, Interior angles, Angles between the two lines, Exterior angles, Angles outside the two lines, Co-interior angles, Same side interior add to 180, Straight angle, Angle of 180 degrees, Intersecting lines, Lines that cross at a point.

Angle Relationships (Parallel Lines)

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