Points and Line Segment

We will discuss here about points and line segment.

$Two Lines Meet$

We know when two lines meet we get a point.

When two points on a plane surface are joined, a straight line segment is obtained.

But if two points in a curved surface is joined, a curved line segment is drawn.

$Straight Line Segment$

When a line segment is extended towards both sides unlimitedly it becomes a line.

We make arrows on both end sides of a line segment to represent a line.

$Represent a Line$

Now we may say that a part of the line is known as the line segment. If there is a line l, then AB is a line segment.

$The Line Segment$

A line segment is named by using the names of its endpoints. Then line segment drawn on the side is called line segment AB or line segment BA.

$Line Segment AB$

A line does not have any fixed length it has infinite length. But a line segment has a fixed length. We may imagine a line as it has unlimited length but a line segment is drawn on a plane paper.

The core of a cuboid or cube is an example of a line segment.

There are many line segments in the following figures:

$Many Line Segments$

Note: Line segments may be joined to form geometric figures.

What is one dimensional figure?

A line or a line segment is called one dimensional (1-D) figure.

Types of lines

There are two types of lines.

(i) Straight line

(ii) Curved line

Straight line: If a line shows only one direction, then it is a straight line. It may be vertical, horizontal or slant.

$Vertical Horizontal or Slant$

Curved line:

It changes its direction.

$Curved Line$

If you hold the two edges of the string in your hands loosely, it will look like as shown below in the picture.

$Curved Line Example$

This is an example of a curved line.

$Straight Line Example$

Straight Line

$Curved Line Example$

Curved Line

To draw a curved line take a piece of paper. Place a bangle on the paper and draw a line as shown in the picture below. You get a curved line.

$Draw a Curve Line$

Points, lines and line segment are the fundamental concepts in geometry.

You might like these

Corner and Sides of Plane Figures |Rectangle |Square |Triangle|Circle
We will learn corners and sides of plane figures The lines that form a plane figure are called sides or edges. Two lines where they meet is called the corner.
Plane Shapes | Drawing Plane Shapes |Circle|Square|Triangle|Rectangle
A plane shape is a figure made up of straight or curved lines. Two straight lines where they meet is called the corner. The straight lines which form a plane shape are called its sides. Some basic shapes are given below.
Straight Lines | Sleeping Lines | Standing Lines | Slant Lines | Math
We will learn how to draw straight lines. Fold a piece of paper and mark two dots as shown in the picture. Draw a line from one dot to another along the fold. The line we get is a straight line. The dots are known as points. We use capital letters like A, B, C, D to name the