Question

What is line?

• A. Distance between three dots
• B. Straight line
• C. Distance between two dots
• D. None of these

Hint:

In geometry, a "line" is assumed to be straight unless specified otherwise (e.g., "curved line"). It is defined by two points and extends infinitely in both directions. A "line segment" is the finite part of a line between two points.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
The question asks for a basic definition or description of a line in geometry. The options are quite simplistic.
Step 2: Detailed Explanation
Let's analyze the options:
(A) Distance between three dots: Three non-collinear dots (points) define a plane, not a line.
(C) Distance between two dots: "Distance" is a measure of length (a number), not the geometric object itself. A line *segment* is the path connecting two dots, and its length is the distance. A line extends infinitely beyond the two dots.
(B) Straight line: In Euclidean geometry, a line is fundamentally a straight, one-dimensional figure with no thickness that extends infinitely in both directions. The term "straight line" is often used to distinguish it from a curved line. Among the given choices, this is the best descriptor for the fundamental property of a line.
Given the poor quality of the options, "Straight line" is the most appropriate answer as it describes the essential characteristic of a line in geometry.