Foci of an Ellipse

Foci is a point used to define the conic section.  F and G seperately are called "focus", both togeather are called "foci".

 

 

 

 

 

 

 

 

Foci of an Ellipse formula
\(\large{ c^2 = a^2 - b^2  }\)
Symbol	English	Metric
\(\large{ c }\) = length center to focus	\(\large{ in }\)	\(\large{ in }\)
\(\large{ a }\) = length semi-major axis	\(\large{ in }\)	\(\large{ in }\)
\(\large{ b }\) = length semi-minor axis	\(\large{ in }\)	\(\large{ in }\)
\(\large{ F }\) and \(\large{ G }\) = focus	\(\large{ in }\)	\(\large{ in }\)