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5 July 2008
Stonehenge builders rival Pythagoras

Stone Age Britons had a sophisticated knowledge of geometry to rival Pythagoras 2,000 years before the Greek 'father of numbers' was born, according to a new study of Stonehenge. Five years of detailed research, carried out by the Oxford University landscape archaeologist Anthony Johnson, claims that Stonehenge was designed and built using advanced geometry. The discovery also suggests it is more rooted in the study of geometry than early astronomy as is often speculated.
     Mr Johnson believes the geometrical knowledge eventually used to plan, pre-fabricate and erect Stonehenge was learnt empirically hundreds of years earlier through the construction of much simpler monuments. He also argues that this knowledge was regarded as a form of arcane wisdom or magic that conferred a privileged status on the elite who possessed it, as it also featured on gold artefacts found in prehistoric graves.
     The most complex geometrical achievement at Stonehenge is an 87-metre diameter circle of chalk-cut pits which mark the points of a 56-sided polygon, created immediately within the monument's perimeter earthwork. Mr Johnson used computer analysis and experimental archaeology to demonstrate that this outer polygon was laid out using square and circle geometry. He believes the surveyors started by using a rope to create a circle, then laid out the four corners of a square on its circumference, before laying out a second similar square, thus creating an inner octagon. The points of the octagon were then utilised as anchors for a surveyor's rope which was used to 'draw' arcs which intersected the circumference so as to progressively create the sides of a vast polygon.

Source: Xtaster (July 2008)

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