Types of Computers

Horizontal Line – A line that is mapped from left-to-right or right-to-left and is parallel to the x-axis in a plane is called a horizontal line.

Vertical Line – A line that is mapped from up to down or down to up and is parallel to the y-axis in a plane is called a vertical line.

Intersecting Lines – When two lines cross each other and meet at a point, they are known as intersecting lines. The point at which they meet is known as the point of intersection.

Perpendicular Lines– When two lines intersect exactly at 90°, they are known as perpendicular lines.

Parallel Lines – Two lines are said to be parallel if they do not intersect at any point and are equidistant.

Observe the figure given below which shows the different types of lines.

Tips on Points and Lines

• 
  A point does not have a length, width, shape or size.
  
• 
  When two distinct points are connected they make a line. 
  
• 
  A line extends in both directions infinitely.
  
• 
  Parallel lines do not intersect each other.
  
• 
  The lines that intersect each other at 90° are known as perpendicular lines.
  
• 
  Two or more points that lie on a single straight line are collinear points.
  
• 
  Two or more points that lie on the same plane are coplanar points.
  

Points and Line Segment
Начало формы
Конец формы
We will discuss here about points and line segment.

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.

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. 

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. 

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.

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.