Perpendicular Lines and Slopes
perpendicular 1630s, very steep or perpendicular face of rock, from French précipice, from Latin praecipitium a steep place, literally
Two lines are termed as parallel if they lie in the same plane, are the same distance apart, and never meet each other Perpendicular lines are intersecting perpendicular At right angles to one another Can be of two lines, two planes, a line and a plane, or a line and a surface From: perpendicular in The Concise Oxford
perpendicular 1630s, very steep or perpendicular face of rock, from French précipice, from Latin praecipitium a steep place, literally
perpendicular Two lines are termed as parallel if they lie in the same plane, are the same distance apart, and never meet each other Perpendicular lines are intersecting
At right angles to one another Can be of two lines, two planes, a line and a plane, or a line and a surface From: perpendicular in The Concise Oxford