Math Definitions - Letter I


Definition of Incircle

Definition of Incircle

An incircle is a circle that fits inside a triangle or regular polygon, touching the midpoint of each side.

The radius of the incircle is the apothem of the polygon.


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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