ray
A line.
Line
Straight means starting from one point and goes in same path and join at end point
A line.
A line.
If you mean a straight path, rather than a strait path, then it is a ray.
a ray
it is called a ray
A line
In mathematics, a tangent to a path refers to a line that touches the path at a single point without crossing through it. It represents the instantaneous direction of motion at that point on the path. Tangents are often used in calculus to calculate rates of change or slopes of curves at specific points. In physics, tangents to the path of a moving object can represent its velocity or acceleration at a given moment.
The path of a moving point is the trajectory or route that the point follows as it travels through space or along a surface. The path can be straight, curved, circular, or any other shape, depending on the motion of the point. It is typically described by its position coordinates as a function of time.
The term you are describing is a line.