# Introduction to conic sections

Contents

Learn about two basic conic sections and their equations: Circle and Parabola.

8 exercises available

Conic sections are formed when you intersect a plane with a cone. In this tutorial, you will learn more about what makes conic sections special.

Learn about the graphs of circles, and how their center and radius are represented algebraically.

Learn about the standard form to represent a circle with an equation. For example, the equation (x-1)^2+(y+2)^2=9 is a circle whose center is (1,-2) and radius is 3.

Learn how to analyze an equation of a circle that is not given in the standard form. For example, find the center of the circle whose equation is x^2+y^2+4x-5=0.

A parabola is the set of all points equidistant from a point (called the focus) and a line (called the directrix). In this tutorial you will learn about the focus and the directrix, and how to find the equation of a parabola given its focus and directrix.