Equation of a circle
Main Subject
Key stage
Category: Pure Coordinate geometry
This is a digital download product
Contributor: Claire Woodhouse
Published: 15/12/2011
Updated: 04/06/2013
Inside
Includes answers
Resource type
Revision
Complete lesson

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16792.pdf58.21 KB
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16792.ppt242.5 KB
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Description
A clear PowerPoint demonstration using Pythagoras' theorem to derive the general equation for plotting a circle on a graph. Includes a brief recap on circle terms, and a worked example to find an equation and where the circle crosses the axes (requiring the quadratic formula).

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