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[[Fasciculus:Angle obtuse acute straight.svg|thumb|Angulus ''a'' est acutus; ''b,'' obtusus; ''c'' = ''a + b'']]
'''Angulus''' in [[geometria]] est figura a duobus [[radius (geometria)|radiis]] [[finis|finem]] communem habentibus, [[vertex (geometria)|verticem]] appellatum, formata.<ref>
[[Fasciculus:Radian.svg|thumb|Angulus unius radianis.]]
==Vide etiam==▼
Mensura anguli est [[radian]] aut [[gradus anguli|gradus]]. Gradus est 1/360 pars circuli. Radian est pars circuli cuius circumferentia radium circulum aequat; est fere 57° (gradus). Angulus rectus est angulus 90° aut π/2 radianum; [[quadratum]] quattuor angulos rectos habet.
▲== Vide etiam ==
*[[Anguli complementarii]]
*[[Angulus hyperbolicus]]
*[[Aspectus astrologicus]]
*[[Bisectio]]
*[[Protractor]]
==
{{Reflist}}
==
* Chisholm, Hugh, ed. [[1911]]. "Angle." ''
* Heiberg, Johan Ludvig. [[1908]]. ''Euclid: The thirteen books of Euclid's Elements, 1.'' Ed. T. L. Heath. http://books.google.com/books?id=UhgPAAAAIAAJ.
* Sidorov, L.A. [[2001]], "Angle", in Hazewinkel, Michiel, ''Encyclopedia of Mathematics'', Springer, ISBN 978-1556080104
{{math-stipula}}
[[Categoria:Mathematica]]
[[Categoria:Geometria elementaria]]
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