Line Segment
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Q1
Length is correctly refined as
Marks:1Answer:
the distance between the end points of a line segment.
Explanation:
Length is the unique measure of a line segment. We use length to compare two or more line segments. 
Q2
A line passing through the midpoint of a given line segment and also perpendicular to it is called
Marks:1Answer:
a perpendicular bisector.
Explanation:
The perpendicular bisector of a line segment is a perpendicular to the line segment that divides it into two equal parts. 
Q3
When two lines intersect and the angle between them is a right angle, then the lines are said to be
Marks:1Answer:
perpendicular.
Explanation:
The two lines are said to perpendicular to each other i.e. AB is perpendicular to CD and CD is perpendicular to AB, and we can write AB CD and CD AB.

Q4
The distance between two end points of a line segment is its
Marks:1Answer:
length.
Explanation:
Here, the distance between A and B is called the length of the line segment AB. 
Q5
Which of the following are matching correctly?
Column A
Column B
(i) A line segment is
(ii) A line segment has
(iii) Two segments are congruent
(iv) Two segments may intersect
(a) If they have equal length.
(b) At a point.
(c) A portion of the line.
(d) Two endpoints.
Marks:1Answer:
(i)c, (ii)d, (iii)a, (iv)b
Explanation:
(i) A line segment is a portion of a line.
(ii) A line segment has two endspoints.
(iii) Two line segments are congruent if they have equal length.
(iv) Two line segments may intersect at a point.