Question

What is the disadvantage in comparing the line segments by mere observation?

Answer 1

Hint: We know that when we compare two line segments of almost the same length, we cannot be sure about the line segment of greater length.

Complete step-by-step answer:

By mere observation, we cannot be absolutely sure about the judgment. When we compare two line segments of almost same lengths, we cannot be sure about the line segment of greater length. Therefore, it’s not an appropriate method to compare line segments having a slight difference between their lengths. This is the disadvantage in comparing line segments by mere observation.

Note: In geometry, a line segment is a part of a line that is bounded by two distinct endpoints, and contains every point on the line between its endpoints. A closed line segment includes both endpoints, while an open line segment excludes both endpoints; a half-open line segment includes exactly one of the endpoints.