Parallel and Perpendicular Lines

Lines are parallel if they are always the same distance apart, will never meet and they also point in the same direction. In elementary geometry, the word perpendicular describes the relationship between two lines which meet... Lines are parallel if they are always the same distance apart, will never meet and they also point in the same direction. In elementary geometry, the word perpendicular describes the relationship between two lines which meet at a right angle.
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