Assertion: ellipsoid's surface | /r/HasProperty | circular
Facets:
Source sentences:
text: A surface, all of whose cross sections are elliptic or circular (including the sphere), that generalises the ellipse and in Cartesian coordinates (x, y, z) is a quadric with equation x2/a2 + y2/b2 + z2/c2 = 0.
text: The surface of a rotating liquid is also a circular paraboloid.
text: As we have seen, cylindrical surfaces don’t have to be circular.