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==Definition== A circle is the set of points that are a fixed distance r, called the radius, from a fixed point (x, y), called the center..."

2015-11-21T20:06:32Z

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==Definition==

A circle is the set of points that are a fixed distance r, called the radius, from a fixed point (x, y), called the center. It can be thought of as a special
case of an ellipse when <math> a^2 = b^2</math>

==Algebraic Expression==

The equation for the circle of radius r centered at (0, 0) is <math>x^2 + y^2 = r^2</math>

If you want a circle centered at (h, k) replace x with (x - h) and y with (y - k)

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Circle - Revision history

MathAdmin: Created page with "__TOC__ ==Definition== A circle is the set of points that are a fixed distance r, called the radius, from a fixed point (x, y), called the center..."

MathAdmin: Created page with "
TOC
==Definition== A circle is the set of points that are a fixed distance r, called the radius, from a fixed point (x, y), called the center..."