Accreditation is a process in which school standards are evaluated by an accreditation agency. In the United States, this process is not completed by the federal government, but by states or private companies with varying rules and standards. Different groups promote accreditation for homeschoolers.
The circle is the simplest and best known conic section. As a conic section, the circle is the intersection of a plane perpendicular to the cone's axis. The geometric definition of a circle is the locus of all points a constant distance r {\displaystyle r} from a point ( h , k ) {\displaystyle (h,k)} and forming the circumference (C).
Table of conics, Cyclopaedia , 1728 In mathematics , a conic section (or simply conic ) is a curve obtained as the intersection of the surface of a cone with a plane . The three types of conic section are the hyperbola , the parabola , and the ellipse .