12. Circles

Consider all points that are equidistant from the origin.

Which of following graphs represents this collection of points?

Loading Graph...

A

Loading Graph...

B

Loading Graph...

A

Loading Graph...

B

Easy

Less than a minute

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Derive the equation of a circle of given center and radius using the pythagorean theorem; complete the square to find the center and radius of a circle given by an equation.