2. A conic section is the intersection of a plane and a cone.

4.  http://www.stewartcalculus.com/data/ ESSENTIAL%20CALCULUS%20Early%2 0Transcendentals/upfiles/ess- reviewofconics.pdf http://www.stewartcalculus.com/data/ ESSENTIAL%20CALCULUS%20Early%2 0Transcendentals/upfiles/ess- reviewofconics.pdf

6. Definition: a plane curve formed by the intersection of a right circular cone with a plane parallel to a generator of the cone; the set of points in a plane that are equidistant from a fixed line and a fixed point in the same plane or in a parallel plane. Standard Form: y^2=4px, y^2=-4px, x^2=4py, x^2=-4py

8. http://www.college- cram.com/study/algebra/conic- sections/equation-of-a-parabola/

10. Definition: a plane curve such that the sums of the distances of each point in its periphery from two fixed points, the foci, are equal. It is a conic section formed by the intersection of a right circular cone by a plane that cuts the axis and the surface of the cone. Standard Form: (x^2/a^2)+(y^2/b^2)+1 or (x^2/b^2)+(y^2/a^2)=1

12. http://www.algebralab.org/lessons/lesso n.aspx?file=Algebra_conics_ellipse.xml

14. Definition: a closed plane curve consisting of all points at a given distance from a point within it called the center. Standard Form: x^2 + y^2=r^2

16. http://www.algebralab.org/lessons/lesso n.aspx?file=Algebra_conics_circle.xml

18. Definition: the set of points in a plane whose distances to two fixed points in the plane have a constant difference; a curve consisting of two distinct and similar branches, formed by the intersection of a plane with a right circular cone when the plane makes a greater angle with the base than does the generator of the cone. Standard Form: (y^2/a^2) - (x^2/b^2)= 1 or (X^2/a^2) - (y^2/b^2)= 1

20. http://www.algebralab.org/lessons/lesso n.aspx?file=algebra_conics_hyperbola. xml