Assertion: ellipse's foci | /r/HasProperty | the two points
Facets:
value: in an ellipse
type: LOCATION
Source sentences:
text: The foci are the two points that dictate how fat or how skinny the ellipse is.
text: the foci are the points F 1 = ( c , 0 ) , F 2 = ( − c , 0 ) {\displaystyle F_{1}=(c,\,0),\ F_{2}=(-c,\,0)} the vertices are V 1 = ( a , 0 ) , V 2 = ( − a , 0 ) {\displaystyle V_{1}=(a,\,0),\ V_{2}=(-a,\,0)}
text: Foci are two points in an ellipse that are central to the shape.
text: The foci are the two points that dictate how fat or how skinny the ellipse is.