Measuring Line Segments

What are the Disadvantages of Comparison of Line Segments by Tracing.

Why ruler is not a better instrument, while measuring the length of a line segment?

Explain positional error due to use of a ruler and divider. If the ruler is placed on a line segment and observed starting point at $3 \mathrm{cm}$ and $12 \mathrm{cm}$ instead of $3.1 \mathrm{cm}$ and $11.9 \mathrm{cm}$. Find the original length of line segment.

Explain positional error due to use of a ruler and divider. If the ruler is placed on a line segment and observed starting point at $2 \mathrm{cm}$ and $15 \mathrm{cm}$ instead of $2.3 \mathrm{cm}$ and $14.7 \mathrm{cm}$. Find the original length of line segment.

What possible errors one can make while using a ruler?

In the below line segments $PQ$ is shorter among all the given line segments.

Compare line segments given below.

Line $TU$ has least length among all the lines below.

Which has greater length among the below lines?

What are the disadvantages of comparing the line segments by observation..

Which line segment is greater among the below line segments.

Compare line segments given below.

In the below line segments $PQ$ is shorter among all the given line segments.

By comparing the lines below we can say that

Compare line segments given below.

The distance of the mid-point of the line segment joining the points (6,8) and (2,4) from the point (1,2) is

Find the coordinates of the midpoint of the line segments joining the points $(2,3)$ and $(4,7)$.

Prove that every line segment has one and only one midpoint. If point C is the midpoint of line segment AB.

Prove that ab=cd if b is the mid point of ac and c is the mid point of bd where abcd lie on a straight line.

What are the ways of comparing a line segment?