Ray
A never-ending straight path that goes in one direction is called a line. Euclid, the Greek mathematician, described it as "breathless length".
a road......?
It is called a line segement
A straight path that has a beginning but no end represents a ray in geometry. A ray starts at a specific point (the beginning) and extends infinitely in one direction. The angle associated with a ray is typically measured from the starting point to another point along the ray, but it can be described as having an angle of 0 degrees relative to its own direction.
A line is a straight path that extends infinitely or endlessly in opposite directions. A straight path that joins two points is called a line segment.
light travels in straight paths called rays
All the directions
a line
A line.
A geodesical path
Line.
it is simply called a line