# Perpendicular Lines

## Explained: The Concept of Perpendicular Lines in Mathematics

In mathematics, we are familiar with the concept of lines. However, there is a particular type of line that we encounter in various real-life scenarios, such as where the floor meets the wall or the plus sign on a first aid kit. These lines are called perpendicular lines.

**What are Perpendicular Lines?**

Perpendicular lines are two lines that intersect at a right angle, denoted by the symbol **⊥**. For example, in the figure below, lines AB and CD intersect at point O, forming a 90-degree angle. We can say that AB and CD are perpendicular lines.

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