I found an easy-to-understand definition of accredited homeschooling on Wikipedia: Accreditation is a type of quality assurance process under which a facility's or institution's services and operations are examined by a third-party accrediting agency to determine if applicable standards are met.
Sections: Introduction, Finding information from the equation, Finding the equation from information, Word Problems. An ellipse, informally, is an oval or a squished circle. In primitive geometrical terms, an ellipse is the figure you can draw in the sand by the following process: Push two sticks into the sand. Take a piece of string and form a loop that is big enough to go around the two sticks and still have some slack.
An example would be a plate that would be recognised as such despite the fact that as you rotated it it would turn from having the shape of a circle, through various sizes of ellipse to a straight edge when viewed side on.