Full Angle

Pronunciation: /fʊl ˈæŋ.gəl/ Explain

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Can you find all 5 angle classes represented?
Manipulative 1 - Angle Classes Created with GeoGebra.

Angles are divided into four classes according to their measure. A full angle is an angle that measures a full circle.

Classes of Angles
Degree MeasureRadian MeasureClass Name
α < 90°α < π/2 rad. Acute angle
α = 90°α = π/2 rad. Right angle
90° < α < 180°π/2 < α < π rad. Obtuse angle
α = 180°α = π rad. Straight angle
180 < α < 360°π < α < 2π rad. Reflex angle
α = 360°α = 2π rad. Full angle
Table 1: Classes of angles


  1. McAdams, David E.. All Math Words Dictionary, full angle. 2nd Classroom edition 20150108-4799968. pg 83. Life is a Story Problem LLC. January 8, 2015. Buy the book
  2. Smith, William Benjamin. Introductory Modern Geometry of Point, Ray, and Circle. pp 26. www.archive.org. Macmillan & Co.. 1892. Last Accessed 7/11/2018. http://www.archive.org/stream/introductorymode00smitrich#page/26/mode/1up/search/full. Buy the book

Cite this article as:

McAdams, David E. Full Angle. 4/21/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. https://www.allmathwords.org/en/f/fullangle.html.

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Revision History

4/21/2019: Modified equations and expression to match the new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
7/9/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
5/5/2011: Initial version. (McAdams, David E.)

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