Midpoint
Its midpoint.
The state line of Louisiana and Mississippi is about the halfway point.
is a point that is halfway between the end points of a line
That's quite a drive. The halfway point is the Arkansas/Missouri state line.
It is known as the midpoint of the line segment
Yes
It is the midpoint
Twice the distance between a point and halfway to the other point.
You maybe thinking of its line of symmetry or point of contact
6.5 is halfway.
the Equator
County Line, GA