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  2. Roodepoort - Wikipedia

    en.wikipedia.org/wiki/Roodepoort

    Roodepoort is a city in the Gauteng province of South Africa. Formerly an independent municipality, Roodepoort became part of the Johannesburg municipality in the late 1990s, along with Randburg and Sandton. Johannesburg's most famous botanical garden, Witwatersrand National Botanical Gardens (now renamed Walter Sisulu National Botanical Garden ...

  3. Randfontein - Wikipedia

    en.wikipedia.org/wiki/Randfontein

    Randfontein is a gold mining town in the West Rand, Gauteng, South Africa, 40 km (25 mi) west of Johannesburg.With the Witwatersrand gold rush in full swing, mining financier JB Robinson bought the farm Randfontein and, in 1889, floated the Randfontein Estates Gold Mining Company.

  4. Limaçon - Wikipedia

    en.wikipedia.org/wiki/Limaçon

    Construction of the limaçon r = 2 + cos(π – θ) with polar coordinates' origin at (x, y) = (⁠ 1 / 2 ⁠, 0). In geometry, a limaçon or limacon / ˈ l ɪ m ə s ɒ n /, also known as a limaçon of Pascal or Pascal's Snail, is defined as a roulette curve formed by the path of a point fixed to a circle when that circle rolls around the outside of a circle of equal radius.

  5. Witwatersrand - Wikipedia

    en.wikipedia.org/wiki/Witwatersrand

    Easiest route. From Gauteng or Pretoria. The Witwatersrand ( UK: / wɪtˈwɔːtərzrænd, - rɑːnd /, US also / ˈwɪtwɔːtərz -/; [ 1] Afrikaans pronunciation: [ˌvətˌvɑːtəɾsˈɾant]; locally the Rand or, less commonly, the Reef) is a 56-kilometre-long (35 mi), north-facing scarp in South Africa. It consists of a hard, erosion ...

  6. Krugersdorp - Wikipedia

    en.wikipedia.org/wiki/Krugersdorp

    Krugersdorp ( Afrikaans for Kruger's Town) is a mining city in the West Rand, Gauteng Province, South Africa founded in 1887 [ 2] by Marthinus Pretorius and Abner Cohen. [ 3] Following the discovery of gold on the Witwatersrand, a need arose for a major town in the west of the reef. The government bought part of the Paardekraal farm and named ...

  7. Geographic coordinate system - Wikipedia

    en.wikipedia.org/wiki/Geographic_coordinate_system

    v. t. e. A geographic coordinate system ( GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [ 1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.

  8. Roodeplaat Dam - Wikipedia

    en.wikipedia.org/wiki/Roodeplaat_Dam

    Roodeplaat Dam is a concrete arch dam situated in South Africa on the Pienaars River (also known along parts of its length as the Moretele River and Moreleta Spruit [1] ), a tributary of the Crocodile River, which flows northwards into the Limpopo River. The dam is a warm monomictic impoundment with stable thermal stratification during the summer.

  9. Randburg - Wikipedia

    en.wikipedia.org/wiki/Randburg

    Randburg is an area located in the Gauteng province of South Africa. Formerly a separate municipality, its administration devolved to the newly created City of Johannesburg Metropolitan Municipality, along with neighbouring Sandton and Roodepoort, in the late 1990s. During the transitional period of 1996–2000, Randburg was part of the ...