What is this line called?, parallel, perpendicular, horizontal, What is this line called?, parallel, perpendicular, vertical, What is this line called?, perpendicular, horizontal, parallel, What is this line called?, parallel, intersecting, perpendicular, What is this line called?, perpendicular, parallel, horizontal, This road is ..., intersecting, parallel, perpendicular, This road is..., paralell, horizontal, perpendicular, This escalator is an example of..., vertical, paralell, perpendicular , This train track is ..., perpendicular, vertical, paralell.

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