Yes line segments can be broken down
In normal metric spaces a line segment cannot have two mid points.
There is only one line (or line segment) that can be drawn between two distince points.
No, because if there is more than one midpoint then it will be like multiple line segments connected together. You can't have two midpoints or more, but you can have one to divide the line segment in half.
Use two line segments (line A and line B) with all points on line A equidistant from all points on line B; in otherwords, use 2 parallel lines. Choose two points on line A (points a and b). Now choose 2 points on line B (x and y) so that the distance of line ab equals the distance of line xy. Connect points a and y with a line segment ab and points b and z with a line segment bz. In simpler words, take two parallel line segments of equal length, and connect their endpoints with two other line segments.
One
The mid-point
This is known as a line segment. A line segment is the part of a line between two equal points.
Only one.
a triangle is formed by line segments that connect two non-collinear points
Regardless of where you mark two points on a circle, there's only one possible line segment between them. It's called a "chord" of the circle.
Line segments have two ending points, while lines by proof and definition go on and on forever.