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Home / Geometry / The point and the lines| Basic Geometry

The point and the lines| Basic Geometry

Point: A point has no length, breadth and thickness i.e., it has no magnitude. It has position only. It is regarded as an entity of zero dimensions. A point is always named with capital letters.

g1

Line: A line has only length and no breadth or thickness. It is regarded as an entity of one dimension.

Straight line: A straight line is the shortest distance between two given points.

g2

Curve line: A curved line is nowhere straight. There are endless varieties of curved lines.

g3

Horizontal line: A horizontal line is perfectly level.

Screenshot_17Vertical line: A vertical line is perfectly upright, like a plumb line.

g4

Oblique line: An oblique line is neither horizontal nor vertical.

g5

 

Parallel lines: Parallel lines are lines in the same direction. They cannot meet however far they may be produced.

g6

Ray: A ray is a portion of a line that begins at some point. A ray has one end point.

g7

Line segment: A line segment is a portion of a line. A line segment has two end points.

g8

 

 

 

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