In these lessons, we will learn how to use Venn Diagrams to illustrate the intersection of two sets.

Related Topics:

More lessons on Sets, Intersection of Three Sets, Venn Diagrams

### Videos

#### Venn Diagrams, Unions, and Intersections

Venn diagrams are an important tool allowing relations between sets to be visualized graphically.
This video introduces the use of Venn diagrams to visualize intersections and unions of sets, as well
as subsets and supersets.
#### Intersection of Sets

The following video describes the Union and Intersection of Sets.
#### Sets: Union, Intersection, Complement

#### Sets: Union and Intersection

The basic idea of the 'union' and 'intersection' of two sets.

The intersection of two sets are those elements that belong to both sets.

The union of two sets are all the elements for both sets.

You can use the Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.

Related Topics:

More lessons on Sets, Intersection of Three Sets, Venn Diagrams

The **intersection** of two sets *X* and *Y* is the set of elements that are common to both set *X* **and** set *Y*. It is denoted by *X* ∩ *Y* and is read ‘*X* intersection *Y* ’.

**Example: **

Draw a Venn diagram to represent the relationship between the sets

*X* = {1, 2, 5, 6, 7, 9, 10} and *Y* = {1, 3, 4, 5, 6, 8, 10}

**Solution: **

We find that *X* ∩ *Y* = {1, 5, 6, 10} ← in both *X* and *Y *

For the Venn diagram,

** Step 1** : Draw two overlapping circles to represent the two sets.

** Step 2** : Write down the elements in the intersection.

** Step 3** : Write down the remaining elements in the respective sets.

Notice that you start filling the Venn diagram from the elements in the intersection first.

**If *** X *** ⊂ Y then**

**Example: **

Draw a Venn diagram to represent the relationship between the sets

* X* = {1, 6, 9} and *Y* = {1, 3, 5, 6, 8, 9}

**Solution:**

We find that *X* ∩ *Y* = {1, 6, 9} which is equal to the set *X*

For the Venn diagram,

** Step 1** : Draw one circle within another circle

** Step 2** : Write down the elements in the inner circle.

** Step 3** : Write down the remaining elements in the outer circle.

The intersection of two sets are those elements that belong to both sets.

The union of two sets are all the elements for both sets.

You can use the Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.

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