Anggulo

Ha heyometriya, an anggulo in uska hitsura nga nahihimo han duha ka rayos nga nasaro hin pareho nga kataposan nga tulbok, nga gintatawag nga vertex han anggulo.

• Heiberg, Johan Ludvig (1908). Heath, T. L.. ed. Euclid. The thirteen books of Euclid's Elements. 1. Cambridge University press. http://books.google.com/books?id=UhgPAAAAIAAJ. 

Atribusyon

•  This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Angle" . Encyclopædia Britannica (11th ed.). Cambridge University Press.

An Wikimedia Commons mayda media nga nahahanungod han: Angles

• Angle Bisectors in a Quadrilateral at cut-the-knot
• Constructing a triangle from its angle bisectors at cut-the-knot
• Various angle constructions with compass and straightedge
• Complementary Angles animated demonstration. With interactive applet
• Supplementary Angles animated demonstration. With interactive applet
• Angle definition pages with interactive applets that are also useful in a classroom setting. Math Open Reference
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