Math Definitions - Letter O

Obtuse Angle

Definition of Obtuse Angle

Definition of Obtuse Angle

An obtuse angle is an angle that is bigger that \(90^\circ\), but smaller than \(180^\circ\).

Obtuse angles are bigger than right angles, but smaller than straight angles.


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 O

Author: Subject Coach
Added on: 6th Feb 2018

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