 | James Gill - Nautical astronomy - 1918 - 468 pages
...P, and horizontal distance of P from tower. CHAPTER V. SOLUTION OF SPHERICAL TRIANGLES. ART. 17. — A spherical triangle is a portion of the surface of a sphere bounded by arcs of three great circles, and, like a plane triangle, has three sides and three angles.... | |
 | Giora Hon, Bernard R. Goldstein - Science - 2008 - 336 pages
..."Triangle spherique est une partie de la surface de la sphere comprise par trois arcs de grands cercles." (A spherical triangle is a portion of the surface of a sphere enclosed by three arcs of great circles.) 73 Legendre [1794] 1817, 214-215: "L'egalite de ces triangles... | |
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A spherical triangle is a portion of the surface of a sphere, bounded by three arcs of great circles. 
