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+1 vote
10.3k views
in Mathematics by (35.7k points)

Define the following terms: 

(i) Line segment 

(ii) Collinear points 

(iii) Parallel lines 

(iv) Intersecting lines 

(v) Concurrent lines 

(vi) Ray 

(vii) Half-line

1 Answer

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Best answer

(i) Line-segment- Give two points A and B on a line l, the connected part (segment) of the line with end points at A and B is called the line segment AB.

 

(ii) Collinear points – Three or more points are said to be collinear if there is a line which contains all of them. 

(iii) Parallel lines – Two lines l and m in a plane are said to be parallel lines if they do not intersect each other.

 

(iv) Intersecting lines – Two lines are intersecting if they have a common point. The common point is called point of intersection.

 

(v) Concurrent lines – Three or more lines are said to be concurrent if there is a point which lies on all of them.

(vi) Ray – A line in which one end point is fixed and the other part can be extended endlessly. 

(vii) Half-line – If A, B, C be the points on a line l, such that A lies between B and C, and we delete the point A from line l, the two parts of l that remain are each called half-line.

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