Math Definitions - Letter I


Definition of Interval

Definition of Interval

An interval is part of a line that extends between two points.

Some examples of intervals are

  • The part of the number line between \(2\) and \(3\). If this includes the endpoints, we write it using the notation \([2,3]\) (the square brackets mean that the endpoints are included). If it doesn't include the endpoints, we write it using the notation \((2,3)\) (the round brackets mean that the end points aren't included).
  • A length of time, marked by fixed starting and finishing times is called a time interval.
  • A line segment.


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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