Which term describes a straight path with infinite length and no width?

Which term describes a straight path with infinite length and no width?

• A. Line
• B. Plane
• C. Ray
• D. Curve

Answer: (A)

Think about how a line is defined in geometry: a straight path that goes on forever in both directions and has no thickness. It is one-dimensional, extending infinitely without any width, which matches the description of a straight path with infinite length and no width. A plane is a flat surface that extends infinitely in two dimensions and has width in that sense. A ray starts at a point and goes forever in one direction, not both. A curve is a path that may bend and is not required to be straight. So the term that fits best is line.

Think about how a line is defined in geometry: a straight path that goes on forever in both directions and has no thickness. It is one-dimensional, extending infinitely without any width, which matches the description of a straight path with infinite length and no width. A plane is a flat surface that extends infinitely in two dimensions and has width in that sense. A ray starts at a point and goes forever in one direction, not both. A curve is a path that may bend and is not required to be straight. So the term that fits best is line.