Page 3 - Lesson Notes
P. 3
Which one is better a divider or a ruler, while measuring the length of a line
segment?
It is better to use a divider than a ruler, because the thickness of the ruler may cause
difficulties in reading the length. However divider gives up accurate measurement.
Check your understanding: (NCERT, Pg- 88, Exercise – 5.1) (First one is done for you
as an example)
Q1. What is the disadvantage in comparing line segments by mere observation?
Answer: There are more chances of error in improper viewing the comparison of line
segments.
Q2. Why is it better to use a divider than a ruler, while measuring the length of a line segment?
Q3. Draw any line segment, say AB. Take any point C lying in between A and B.
Measure the lengths of AB, BC and AC. Is AB = AC + CB?
