No, they are not.
No.
interchangeable parts
'Line Segment' is a portion of a line that includes two points and all of the collinear points between the hypothetical two points also 'Line Segment' because a line or line segment is a set of infinite points and the infinite points are collinear....
It is a line segment.
In geometry, a line is somply a collection of points. However, when naming a line, a line is nemed using two of its points.
Collinear Points.
A line has an infinite amount of points.
Non-collinear points.
Yes. A line segment is part of a line. It is distinguished by its end points. It contains all the points between its end points. A line segment is a subset of the line it rides.
In terms of Euclidian geometry, no lines have end points. A line segment has end points, as it is a section of a defined line of points.
2 points determine a line.
The shortest distance between two points is a line, or a line segment. If you have two points, and you know they are part of a line, you can connect them with a line.