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Math Definitions - Letter N


Definition of Normal

Definition of NormalDefinition of Normal

A normal to a flat surface, such as a plane, is a line that goes directly away from the surface, at right angles.

Surfaces such as spheres that are not flat have normals too. To find a normal to a point, draw a plane that only touches the surface at that point (called a tangent plane) and draw a normal to the plane at that point.


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 N

Author: Subject Coach
Added on: 6th Feb 2018

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