Central-angle

central angle

noun Geometry.
an angle formed at the center of a circle by two radii.

Origin:
1900–05

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
central angle
 
n
an angle whose vertex is at the centre of a circle

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
central angle   (sěn'trəl)  Pronunciation Key 
An angle formed by two rays from the center of a circle, with the center forming the vertex.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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