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The number of points (n), chords (c) and regions (r G) for first 6 terms of Moser's circle problem. In geometry, the problem of dividing a circle into areas by means of an inscribed polygon with n sides in such a way as to maximise the number of areas created by the edges and diagonals, sometimes called Moser's circle problem (named after Leo Moser), has a solution by an inductive method.
The United Nations geoscheme is a system which divides 248 countries and territories in the world into six continental regions, 22 geographical subregions, and two intermediary regions. [1] It was devised by the United Nations Statistics Division (UNSD) based on the M49 coding classification . [ 2 ]
The five main latitude regions of Earth's surface comprise geographical zones, [1] divided by the major circles of latitude. The differences between them relate to climate. They are as follows: The North Frigid Zone, between the North Pole at 90° N and the Arctic Circle at 66°33′50.3″ N, covers 4.12% of Earth's surface.
Global regionalization is a process parallel to globalization, in which large regions are divided into smaller regions, areas, or districts. [1] Globalization is can occur globally and regionally. A component of international relations in the 21st century is regional development and cooperation.
On 20 December 1971 Resolution 2847 (XXVI) formally set up the present distribution system that is in place for the Economic and Social Council. It also split the African and Asian states region into two separate regions, one for Asia and one for Africa. [8] Finally, on 19 December 1978 Resolution 33/138 was passed by the General Assembly.
Many municipalities are administratively divided into boroughs, wards, districts, neighborhoods, or villages, which may or may not have an active government. The US Census defines minor civil divisions and census county divisions for top-level county divisions, many only for statistical purposes.
Regional geography is still taught in some universities as a study of the major regions of the world. In the Western Hemisphere, these may be cultural regions such as Northern and Latin America, or their corresponding geographic regions or continents, namely North and South America, whose "boundaries" differ significantly from the cultural regions.
Straighten figure and use simpler angles ±24°, ±96° and ±144° at the expense of having largest smallest region. 20:09, 16 April 2019: 512 × 768 (6 KB) Cmglee: Maximise area of smallest region by using 3-fold symmetry with the 2 inscribed triangles offset by 48.71°. 23:27, 8 April 2019: 512 × 768 (7 KB) Cmglee: Fix colours and text ...