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en.wikipedia.org/wiki/Circle

The circle has been known since before the beginning of recorded history. Natural circles would have been observed, such as the Moon, Sun, and a short plant stalk blowing in the wind on sand, which forms a circle shape in the sand.

www-history.mcs.st-and.ac.uk/Curves/Circle.html

The first theorems relating to circles are attributed to Thales around 650 BC. Book III of Euclid's Elements deals with properties of circles and problems of inscribing and escribing polygons. One of the problems of Greek mathematics was the problem of finding a square with the same area as a given circle.

www.smithsonianmag.com/travel/world-full-circles-180954529

A fascination and interest in circles predates recorded history, with many ancient cultures finding approximations for pi—the ratio of a circle's circumference to its diameter—thousands of ...

www.psychospiritual.org/.../33-a-brief-history-of-circle

As women connect around our circular earth, we are creating networks--circles within a larger circle, all part of this spiraling galaxy and an expanding field of creative form and force. We carry within us a spark of light initiated with the big bang—that same creative power that birthed the universe.

jwilson.coe.uga.edu/EMT668/EMAT6680.F99/Kim/emat6690/instructional...

History. The study of the circle goes back beyond the recorded history. The invention of the wheel is a fundamental discovery of properties of a circle. The Greeks considered the Egyptians as the inventors of geometry. Ahmes, who is a scribe and the author of the Rhind papyrus, gives a rule for determining the area of a circle that corresponds ...

nrich.maths.org/2561

Circle designs feature in the artefacts found from ancient civilisations and from more recent cultures all over the world. Prehistoric people were building stone circles 4,000 years ago, and you have probably heard of the most famous stone circle at Stonehenge in Wiltshire, England.

www.thehindu.com/society/history-and-culture/the-story-of...

Along with the colourful gardens and aesthetically designed buildings, the circles and squares also contributed significantly in enhancing elegance of Bangalore, the City Beautiful of yesteryear ...

www.cropcirclesecrets.org/history.html

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www.globaldrumcircles.com/drum-circle-history

A brief history of drums and drum circles Drums are among the earth's oldest musical instruments. Historically, most drums were made with some sort of animal skin stretched over a hollowed out wooden shell.

www.reference.com/math/invented-circle-b1c0944e4208f853

Who Invented the Circle? Home Math Geometry Shapes. Who Invented the Circle? Who Invented the Circle? Since circular creations appear throughout nature, no man can be credited with the invention of the circle. From the cross-section of a plant stem to the moon and the sun, circles appear everywhere in nature. ... the history of circles area of ...

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