Menentukan Luas Daerah Segitiga Spheris

Mulyadi Mulyadi - Jurusan Matematika Universitas Negeri Padang
Mirna Mirna - Jurusan Matematika Unversitas Negeri Padang
Riry Sriningsih - Jurusan Matematika Universitas Negeri Padang

Abstract


Abstract - Spherical Triangle is a triangle on surface of ball that formed by circles which cutting the ball. The circle that forms a Spherical Triangle are circles which cutting the ball in center. Area of Spherical Triangle is different from Euclid Triangle. This study look at how to find the Area of Spherical Triangle. The result obtained in this study is how to find the area of Spherical Triangle that must knows about dihedral angle or trihedral angle that forms spherical triangle.

Keywords - spherical triangle, dihedral angle, trihedral angle.


Full Text:

PDF

References


Anggraini, Mellysa Putri. 2012. Sifat-Sifat yang Berhubungan dengan Sudut dan Sisi pada Segitiga Spheris, Skripsi. Padang: Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang.

Ayres, JR. Frank. 1954. Theory And Problems (of Plane and Spherical) Trigonometry, New York: Schaum Publisning CO.

Barnelt, R. A., Ziegler, M. R., dan Byleen, K.E.(2007). Analytic Trigonometry, United States of America: John Wiley & Sons.

Brannan, D. A., Esplen, M. F., dan Gray, J.J. (1999). Geometry, Cambridge: University Press.

Lewis, H. 1973. Geometry A Contemporary Course 3rd.Edition, New York: Mccormick-Mathers Publishing Company.

Kusno. 2004. Geometri, Jember: Universitas Jember.




DOI: http://dx.doi.org/10.24036/unpjomath.v6i1.11559