Assertion: ellipsoid | /r/HasProperty | ellipsis
Facets:
Source sentences:
text: ellipsoids are ellipses; in particular, one can always find a plane section that is a circle.
text: Ellipsoid is a three-dimensional geometric surface, which is symmetrical about each of three perpendicular axes, whose plane sections normal to one axis are circles and all the other plane sections are ellipses.
text: Ellipsoid is a solid for which all plane sections through one axis are ellipses and through the other are ellipses or circles.