직각 (Korean Wikipedia)

Analysis of information sources in references of the Wikipedia article "직각" in Korean language version.

refsWebsite

Global rank Korean rank

311^th place

74^th place

489^th place

255^th place

513^th place

230^th place

low place

1,218^th place

gutenberg.org

(유클리드 기하학 원론 1권 정의 )http://www.gutenberg.org/files/21076/21076-pdf.pdf?session_id=9bfd9ef535a37ac859a6028f101fa4451e3226cc (구텐베르크 프로젝트,John Casey, 퍼블릭 도메인)

mathpages.com

(매스페이지)Heron's Formula and Brahmagupta's Generalization - http://www.mathpages.com/home/kmath196/kmath196.htm

unicode.org

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

wolfram.com

mathworld.wolfram.com

(매스월드)http://mathworld.wolfram.com/HeronsFormula.html