Ângulo reto (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ângulo reto" in Portuguese language version.

refsWebsite

Global rank Portuguese rank

1mathopenref.com

low place

low place

311^th place

1,293^rd place

1books.google.com

3^rd place

6^th place

books.google.com

Müller-Philipp, Susanne; Gorski, Hans-Joachim (2011). Leitfaden Geometrie [Handbook Geometry] (em alemão). [S.l.]: Springer. ISBN 9783834886163

mathopenref.com

«Right Angle». Math Open Reference. Consultado em 26 de abril de 2017

unicode.org

Unicode 5.2 Character Code Charts Mathematical Operators, Miscellaneous Mathematical Symbols-B