Reflex Angle

Pronunciation: /ˈri flɛks ˈæŋ gəl/ ?

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Angles are divided into four classes according to their measure. A reflex angle is an angle that measures more than 1/2 of a full circle and less than 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

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References

  1. reflex angle. merriam-webster.com. Encyclopedia Britannica. (Accessed: 2009-03-12). http://www.merriam-webster.com/dictionary/reflex angle.

Cite this article as:


Reflex Angle. 2009-12-14. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/r/reflexangle.html.

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Revision History


2009-12-14: Expanded table of angle classes. (McAdams, David.)
2008-09-16: Initial version (McAdams, David.)

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