Search results
Results from the WOW.Com Content Network
In geometry, a spherical segment is the solid defined by cutting a sphere or a ball with a pair of parallel planes. It can be thought of as a spherical cap with the top truncated, and so it corresponds to a spherical frustum. The surface of the spherical segment (excluding the bases) is called spherical zone. Geometric parameters for spherical ...
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
This article about a location in Điện Biên province, Vietnam is a stub. You can help Wikipedia by expanding it.
In geometry, a spherical cap or spherical dome is a portion of a sphere or of a ball cut off by a plane. It is also a spherical segment of one base, i.e., bounded by a single plane. If the plane passes through the center of the sphere (forming a great circle ), so that the height of the cap is equal to the radius of the sphere, the spherical ...
In geometry, a spherical sector, [1] also known as a spherical cone, [2] is a portion of a sphere or of a ball defined by a conical boundary with apex at the center of the sphere. It can be described as the union of a spherical cap and the cone formed by the center of the sphere and the base of the cap.
The district lies in the southeastern part of Điện Biên Province, to the immediate southeast of Điện Biên Phủ City, south of Tuần Giáo district, east of Điện Biên district, north/northwest of Sốp Cộp district and west of Sông Mã district and Thuận Châu district in Sơn La province.
The following year, the important Battle of Điện Biên Phủ was fought between the Việt Minh (led by General Võ Nguyên Giáp), and the French Union (led by General Henri Navarre, successor to General Raoul Salan). The siege of the French garrison lasted fifty-seven days, from 17:30, 13 March to 17:30, 7 May 1954.
Contrary to the first postulate ("that between any two points, there is a unique line segment joining them"), there is not a unique shortest route between any two points (antipodal points such as the north and south poles on a spherical globe are counterexamples); contrary to the third postulate, a sphere does not contain circles of arbitrarily ...