Assertion: ellipse's vertex | /r/HasProperty | point
Facets:
value: on the ellipse
type: LOCATION
Source sentences:
text: The vertices are the points on the ellipse that fall on the line containing the foci.
text: Vertices - The four points where the major and minor axis touches the ellipse are the vertices.
text: The vertices of an ellipse, the points where the axes of the ellipse intersect its circumference, must often be found in engineering and geometry problems.