perpendicular distance is the directed distance from a line to a point.
directed distance from a line to a point?
perpendicular distance
perpendicular distance





















































in geometry, the perpendicular distance between two objects is the distance from one to the other, measured along a line that is perpendicular to one or both.





















































in particular, see:





















































bullet::::- distance from a point to a line, for the perpendicular distance from a point to a line in two-dimensional space





















































bullet::::- point on plane closest to origin, for the perpendicular distance from the origin to a plane in three-dimensional space





















































bullet::::- plane (geometry)#distance from a point to a plane, for the perpendicular distance from an arbitrary point to a plane in three-dimensional space
perpendicular distance
the distance covered by a vehicle (for example as recorded by an odometer), person, animal, or object along a curved path from a point "a" to a point "b" should be distinguished from the straight-line distance from "a" to "b". for example, whatever the distance covered during a round trip from "a" to "b" and back to "a", the displacement is zero as start and end points coincide. in general the straight-line distance does not equal distance travelled, except for journeys in a straight line.





















































section::::distance versus directed distance and displacement.:directed distance.
distance