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. Smith, William Benjamin. Introductory Modern Geometry of Point, Ray, and Circle. pp 26. www.archive.org. Macmillan & Co.. 1892. Last Accessed 8/6/2018. http://www.archive.org/stream/introductorymode00smitrich#page/26/mode/1up/search/full. Buy the book

Cite this article as:

McAdams, David E. Full Angle. 7/11/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/f/fullangle.html.

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Revision History

7/9/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)

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