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A four-colored map of the states of the United States (ignoring lakes and oceans) In mathematics, the four color theorem, or the four color map theorem, states that no more than four colors are required to color the regions of any map so that no two adjacent regions have the same color. Adjacent means that two regions share a common boundary of ...
The Zambezi (also spelled Zambeze and Zambesi) is the fourth-longest river in Africa, the longest east-flowing river in Africa and the largest flowing into the Indian Ocean from Africa. Its drainage basin covers 1,390,000 km 2 (540,000 sq mi), [ 1][ 2] slightly less than half of the Nile 's.
The Great Escarpment is a major topographical feature in Africa that consists of steep slopes from the high central Southern African plateau [ 1] downward in the direction of the oceans that surround southern Africa on three sides. [ 2][ 3] While it lies predominantly within the borders of South Africa, in the east the escarpment extends ...
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa.It is bounded to the south by 2,798 kilometres (1,739 mi) of coastline that stretches along the South Atlantic and Indian Ocean; [18] [19] [20] to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini.
Lesotho ( / lɪˈsuːtuː / ⓘ lih-SOO-too, [ 6][ 7] Sotho pronunciation: [lɪˈsʊːtʰʊ] ), formally the Kingdom of Lesotho, is a landlocked country in Southern Africa. As an enclave of South Africa, with which it shares a 1,106 km (687 mi) border, [ 8] it is the largest sovereign enclave in the world, and the only one outside of the ...
Geography of South Africa. / 29.000°S 24.000°E / -29.000; 24.000. South Africa occupies the southern tip of Africa, its coastline stretching more than 2,850 kilometres (1,770 miles) from the desert border with Namibia on the Atlantic (western) coast southwards around the tip of Africa and then northeast to the border with Mozambique ...
Vaalharts Valley. Valley of a Thousand Hills. Categories: Valleys by country. Valleys of Africa by country. Landforms of South Africa. Hidden category: Commons category link is on Wikidata.
The smallest (and unique up to rotation and reflection) non-trivial case of a magic square, order 3. In mathematics, especially historical and recreational mathematics, a square array of numbers, usually positive integers, is called a magic square if the sums of the numbers in each row, each column, and both main diagonals are the same.