Types Of Lines & Their Properties

Understanding different types of lines and their properties is very important in maths as they form the basis for all the shapes in geometry. There are many types of lines like parallel lines, intersecting lines, perpendicular lines, etc. The concept of lines is not only limited to textbooks, we see them everywhere around us in the world from railway tracks to bridges. Thus, understanding about different types of lines and their properties is vital for daily life too. In this topic of class 6 maths we will also cover a special line called a transversal that cuts across other lines along with parallel lines, intersecting lines, perpendicular lines and concurrent lines. Let’s start learning about each of these one by one.

Table of Contents

• What are different types of lines
• Properties of Types of Lines

What are different types of lines

Before we explore the types of lines, let's briefly revise the basics of the line. A line extends endlessly in both directions and has no endpoints. It is represented by using letters AB where, A represents one end and the B represents other. Here are the different types of lines:

Parallel Lines: The lines that never meet are called parallel lines. Irrespective of how we extend these lines in both the directions they never cross and are always the same distance from each other.

Intersecting Lines: Two lines that intersect each other only and only at one point are called intersecting lines. The point at which these lines meet is known as the point of intersection. There is an angle that forms between intersecting lines. If the angle formed between these lines is a right angle then the lines are perpendicular to each other.

Perpendicular Lines: The lines that intersect each other such that the angle formed is a right angle then they are called perpendicular to each other. Perpendicular lines cross each other to from an angle of 90 degrees between them. The symbol used to represent perpendicular lines is ⊥ so, when AB is perpendicular to CD then we represent it as AB ⊥ CD.

Concurrent Lines: Three or more lines that pass through the same single point are called concurrent lines. The common point is called the point of concurrency.

Transversal: A transversal is a line that intersects two or more lines at different points. When a transversal crosses two parallel lines, it creates several special angle pairs that you will study in detail in higher classes.

Properties of Types of Lines