What is a Venn diagram?
A Venn diagram consists of two or more overlapping circles. They are used to show relationships – mainly similarities and differences – and visually organize information. A Venn diagram isn’t just made up of the circles, but also the area around the circles, which encapsulates the data that doesn’t fall into those categories. Each of the circles represents a different category of data. The overlapping parts of the circles show where those categories of data have something in common. The overlapping area is called the “intersection”. When you have multiple sets of data to represent, you can create a three circle, four circle or even five circle Venn diagram.
In the example on the right, one circle represents what a person believes. The other circle represents what is true. The area where they intersect – where what someone believes is also true – represents knowledge.