Discussion
Two columns are given as shown below :
| Column - I | Column - II |
|---|---|
| (a) face of a black-board | (i) two end points |
| (b) a line has | (ii) one end point |
| (c) a ray has | (iii) represents a part of a plane |
| (d) a line segment has | (iv) no definite length |
Column - I and II are matched as :
Answer: C
The correct match is (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i).
The flat face of a blackboard represents part of a plane. A line extends endlessly in both directions, so it has no definite length. A ray starts at one end point and goes on in one direction. A line segment has two end points and a fixed length.
Options 1 and 2 give the ray two end points or the line one end point, and option 4 makes the blackboard a segment.
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