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Question

What is a line-segment? What is a ray? How many line segments can be made out of the following line?


[3 MARKS]


Solution

Line segment: 1 Mark
Ray: 1 Mark
Number of Lines segments: 1 Mark

In a line segment, the endpoints are fixed i.e. a line is contained between two points.

A ray is a portion of a line. It starts at one point and goes endlessly in one direction.

The line segments in the above figure are:
AB,AC,AD,AE,BC,BD,BE,CD,CE,DE.
Hence there 10 lines segments in the above figure.

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