Wikipedia:Main Page history/2011 October 9

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Waddesdon Road railway station was a small halt in open countryside in Buckinghamshire, England. It was opened in 1871 as part of a short horse-drawn tramway to assist with the transport of goods from and around the Duke of Buckingham's extensive estates in Buckinghamshire and to connect the Duke's estates to the Aylesbury and Buckingham Railway at Quainton Road. In 1872 the line was expanded and converted for passenger use, becoming known as the Brill Tramway. In 1899 the operation of the line was taken over by the London-based Metropolitan Railway. In 1933 the Metropolitan Railway was taken into public ownership to become the Metropolitan Line of the London Underground, and despite its rural setting Waddesdon Road station became a part of the London Transport system. The new management could not see a future for the line as a financially viable passenger route, and Waddesdon Road, along with the rest of the former Brill Tramway, was closed in late 1935. (more...)

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Pythagorean theorem animation

An animated geometric proof of the Pythagorean theorem, which states that among the three sides of a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides, written as a2 + b2 = c2. A large square is formed with area c2, from four identical right triangles with sides a, b and c, fitted around a small central square. Then two rectangles are formed with sides a and b by moving the triangles. Combining the smaller square with these rectangles produces two squares of areas a2 and b2, which must have the same area as the initial large square.

Image: Joaquim Alves Gaspar

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