A series of free, online video lessons with examples and solutions to help Algebra students learn about circle conic sections.

**Related Pages**

Conic Sections: Circles

Conic Sections: Ellipses

Conic Sections: Parabolas

Conic Sections: Hyperbolas

A circle is a set of points (x, y) which are a fixed distance r, the radius, away from a fixed point (h, k), the center.

The equation of the circle in standard form is

(x - h)^{2} + (y - k)^{2} = r^{2}

If a circle is given in general form then we must complete the square on the x and y parts of the equation to rewrite it in standard form.

In this video, you will learn how to identify the equation of a circle, how to write the standard form of a circle from the general form and how to graph a circle.

Intuitive Math Help - Circles

Circles (Intuitive Math Help)

This video covers writing equations of circles given information like the radius, center, or a point the circle goes through and the center.

Try the free Mathway calculator and
problem solver below to practice various math topics. Try the given examples, or type in your own
problem and check your answer with the step-by-step explanations.

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