'An ellipse's center of symmetry is midway between these 2 points, abbreviated f.'
foci
GEOMETRY: An ellipses center of symmetry is midway between these 2 points, abbreviated f.
An ellipse's center of symmetry is midway between these 2 points, abbreviated f.
An ellipse's center of symmetry is midway between these 2 points, abbreviated f.
GEOMETRY
foci
GEOMETRY