Math Definitions - Letter I

Intersection (sets)

Definition of Intersection (sets)

Definition of Intersection (sets)

The intersection of two sets \(A\) and \(B\) is the set of all elements that are in both set \(A\) and set \(B\).

We use the symbol \(\cap\) to say that we're taking an intersection.

For example, the Venn diagram in the picture shows the sets \(\text{Rugby} = \{\text{Ben}, \text{Jacob}, \text{Ed}, \text{Al}\}\) and \(\text{AFL} = \{\text{Ed}, \text{Al}, \text{Sam}, \text{Tom}\}\). Their intersection is \(\text{Rugby} \cap \text{AFL} = \{\text{Ed},\text{Al}\}\). Ed and Al play both Rugby and AFL.


The aim of this dictionary is to provide definitions to common mathematical terms. Students learn a new math skill every week at school, sometimes just before they start a new skill, if they want to look at what a specific term means, this is where this dictionary will become handy and a go-to guide for a student.


Year 1 to Year 12 students

Learning Objectives

Learn common math terms starting with letter I

Author: Subject Coach
Added on: 6th Feb 2018

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