Unformatted text preview: x 2 + y 2 is the distance between a point x , y ( ) and the origin 0, 0 ( ) . x 2 + y 2 is the squared distance between them. Equation of a Circle with Center 0, 0 ( ) The standard form of the equation of a circle (in the xy-plane) with center 0, 0 ( ) and radius r , where r > , is given by: x 2 + y 2 = r 2 • This is because such a circle consists of all points x , y ( ) whose squared distance from 0, 0 ( ) is r 2 ....
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- Spring '09
- Graph Theory, Euclidean geometry, diameter