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==Useful websites==
==Useful websites==
#[http://www.mathsisfun.com/geometry/circle.html maths is fun] A good website on definitions for circles.
#[http://www.mathsisfun.com/geometry/circle.html maths is fun] A good website on definitions for circles.
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#[http://www.coolmath.com/reference/circles-geometry.html COOL MATH] For clear and easy definitions.
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#[http://www.coolmath.com/reference/circles-geometry.html Cool math] For clear and easy definitions.
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#[http://www.mathopenref.com/circle.html OPEN REFERENCE] Contains good simulations.
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#[http://www.mathopenref.com/circle.html Open reference] Contains good simulations.
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#[http://en.wikipedia.org/wiki/Math_circle#History WIKIPEDIA] Has good explanations on circles.
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#[http://en.wikipedia.org/wiki/Math_circle#History Wikipedia] Has good explanations on circles.
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#[http://www.khanacademy.org KHAN ACADEMY] Has good educative videos.
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#[http://www.khanacademy.org Khan academy] Has good educative videos.
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#[http://www.arvindguptatoys.com ARVIND GUPTA TOYS] Contains good information.
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#[http://www.arvindguptatoys.com Arvind gupta toys] Contains good information.
#[http://nrich.maths.org/2490 nrich.maths.org] Refer for understanding Pi.
#[http://nrich.maths.org/2490 nrich.maths.org] Refer for understanding Pi.