球面三角学 Spherical trigonometry
（重定向自Spherical polygon）
![](/Images/godic/202502/12/RechtwKugeldreieck.svg4001.png")
![纳皮尔的圆周显示直角三角形的部份关联性](/Images/godic/202502/12/Neper's_Circle4001.png")
![Triángulo esférico trirectángulo (sus ángulos suman : 270°).](/Images/godic/202502/12/Triangle_trirectangle4001.png")
![Distancia ortodrómica entre dos puntos a lo largo de un círculo máximo sobre la superficie de una esfera.](/Images/godic/202502/12/Ortodroma.svg4001.png")
球面三角学是球面几何学的一部分，主要在处理、发现和解释多边形 (特别是三角形) 在球面上的角与边的联系和关联。在天文学上的重要性是用于计算天体轨道和地球表面与太空航行时的天文导航。
Spherical polygon
中文百科
英语百科
Spherical trigonometry 球面三角学
（重定向自Spherical polygon）
![Eight spherical triangles defined by the intersection of three great circles.](/Images/godic/202502/12/Spherical_trigonometry_Intersecting_circles.svg4001.png")
![The basic triangle on a unit sphere.](/Images/godic/202502/12/Spherical_trigonometry_basic_triangle.svg4001.png")
![The polar triangle A'B'C'](/Images/godic/202502/12/Spherical_trigonometry_polar_triangle.svg4001.png")
![](/Images/godic/202502/12/Spherical_trigonometry_vectors.svg4001.png")
Spherical trigonometry is the branch of spherical geometry that deals with the relationships between trigonometric functions of the sides and angles of the spherical polygons (especially spherical triangles) defined by a number of intersecting great circles on the sphere. Spherical trigonometry is of great importance for calculations in astronomy, geodesy and navigation.
- tooth of synchronous belt
- tooth of wheel
- tooth ornament
- tooth outline
- tooth overlap
- tooth pad
- tooth papilla
- tooth papillae
- tooth parts
- tooth paste
- toothpaste against smoke spot
- toothpaste factory
- toothpaste hangover
- toothpaste
- tooth paste shadow
- toothpaste shadow
- toothpaste sign
- toothpaste smile
- toothpaste tube
- toothpaste with chlorophyll
- toothpaste with enzyme
- toothpaste with fluoride
- toothpasty
- tooth pathohistology
- Tooth Permeabilities