Define the following terms:


Define the following terms:
(i) Line segment
(ii) Ray
(iii) Intersecting lines
(iv) Parallel lines
(v) Half line
(vi) Concurrent lines
(vii) Collinear points
(viii) Plane



(i) Line segment :A line segment is a part of line that is bounded by two distinct end-points. A line segment has a fixed length.

(ii) Ray:  A line with a start point but no end point and without a definite length is a ray.

(iii) Intersecting lines: Two lines with a common point are called intersecting lines.

 (iv) Parallel lines: Two lines in a plane without a common point are parallel lines.

 (v) Half line: A straight line extending from a point indefinitely in one direction only is a half line.

 (vi) Concurrent lines: Three or more lines intersecting at the same point are said to be concurrent.

 (vii) Collinear points: Three or more than three points are said to be collinear if there is a line, which contains all the points.

(viii) Plane: A plane is a surface such that every point of the line joining any two point on it, lies on it.



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