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

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

Grade:12

2 Answers

Anand Kumar Pandey
askIITians Faculty 5859 Points
one month ago
Dear Student

By mere observation we can’t compare the line segments with slight difference in their length. We can’tsay which line segment is of greater length. Hence, the chances of errors due to improper viewing are more.

​Thanks
Ram Kushwah
108 Points
one month ago
By mere observation we guess that segments AB and CD are same in length but actually it may be different.
Thus 
The disadvantage in  line segments by mere observation is that some times the difference in lengths between two line segments may not be adequate. so, we cannot be always sure about our usual judgement.
 
Thanks 
Pl aprove

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