What are parallel and perpendicular lines?

Perpendicular and Parallel perpendicular For perpendicular lines, the slopes must be opposite reciprocals (different signs and fraction perpendicular In geometry, two geometric objects are perpendicular if their intersection forms right angles at the point of intersection called a foot

perpendicular The two lines are perpendicular when one line meets another at a right angle These lines intersect the plane at the right angles, totaling 180