If you mean a straight line that does not extend BEYOND it's two end points, then that would be a 'line segment.'
Not sure what a loni is. On a plane surface, a curved line between any two fixed points is longer than the straight line joining the same points.
An interval. The short distance is the length of a straight line joining the two points.
A line segment is a straight line with end points
It has been attributed to Archimedes.
It is a straight line extending between two points on the circumference of a circle.
A straight line is the shortest distance between two points, a line is the delineation of a connection between two or more points.
The shortest distance between two points is... a straight line.
the measure of a straight-line distance between two points is called length.
A line.
A line segment
a straight line
The length of a straight line between those two points.
Normally a straight line segment.
a straight line
displacement
The shortest distance between four points is a straight line to and from each individual point. If all four points are aligned, the result will be a single straight line through all four points.
straight line.