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Length is the distance - in given units - between two points on a line.
It is simply called the distance between the two points - simple as that. How that distance is measured will depend on the nature of the surface on which the two points are located as well as on the metric for measuring distance that is defined on that space.The common metric in Euclidean space is the Pythagorean distance while on the surface of a sphere (like the Earth, for example), distances are measured along the great arc.
the measure of a straight-line distance between two points is called length.
Without wishing to overcomplicate matters, one could simply define a straight line as: "the shortest distance between two given points".
it is called best fit because it minimizes the sum of square of the distances of points from line. That is to say, if you add up the squares of the distance of the different data points from the line, it will have the smallest value and it is in our interest to have the distance of the point from the line be as small as possible given by ziar khan
The locus of points at a given distance to a line would be a line parallel to the first line. Assuming that both lines are straight.
In three dimensions, the solid defined as being bound by the set of points at a given distance form a point is a sphere. In two dimensions, the figure defined as being bound by the set of points at a given distance from a point is a circle. In one dimension, a line segment is bound by the two points at a given distance from a point.
line
shortest distance between two points in space
Straight line
Length is the distance - in given units - between two points on a line.
A pair of parallel lines at a distance of 1 cm from the line Q.
Given a straight line (a directrix) and a point (the focus) which is not on that line, a parabola is locus of all points whose distance form the directrix is the same as its distance from the focus.
No. A ray is infinite on one side and ends at a point at the other. A line segment ends in two points. A ray can contain a line segment, as the distance between any two given points on the ray is a line segment.
A straight line. But not in curved space. Since you asked about science, I thought I'd mention that ...
this is supposedly the shortest distance between any 2 points, however if you could bend the space between the two points and fold them together, well then they would be right beside each other
It is simply called the distance between the two points - simple as that. How that distance is measured will depend on the nature of the surface on which the two points are located as well as on the metric for measuring distance that is defined on that space.The common metric in Euclidean space is the Pythagorean distance while on the surface of a sphere (like the Earth, for example), distances are measured along the great arc.