Circle Circumference

 teachMathematics: Circle Circumference

What shape has no starting point, no ending point, a single centre and no straight sides? Actually, you might like to argue that it has an infinite amount of straight sides! The circle is such an important shape to us: just think how difficut it would be to ride your bicycle if we hadn"t invented the circle. In this investigation you are going to discover an extremely important relationship about circles. You"ll...

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