17*16/2 = 136
Only one.
They have end points
ten
Line segments can be broken down into points.
15
10 collinear points form one set of overlapping line segments, of which there are 45.
45 points
3
17*16/2 = 136
Only one.
They have end points
Exactly one. No more and no less.
No, because then it would become many line segments.
ten
Line segments can be broken down into points.
8 collinear points determine 28 unique line segments