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100
100
100
100
100
200
Lines a and b have the same slope.
200
Lines a and b have reciprocal slopes.
200
Lines b and c intersect at 30 degrees.
200
Lines a and b intersect each other at 90 degrees.
200
Lines a and b have are on different planes and are going in different directions.
300
Perpendicular, parallel or none?
Perp
300
Perpendicular, parallel or none?
300
Perpendicular, parallel or none?
300
Perpendicular, parallel or none?
300
Perpendicular, parallel or none?
