Assertion: parabola's feature | /r/HasProperty | its vertex
Facets:
Source sentences:
text: The key features of a parabola are its vertex, axis of symmetry, focus, directrix, and focal diameter.
text: The key features of a parabola are its vertex, axis of symmetry, focus, directrix, and latus rectum.
text: The key features of a parabola are its vertex, axis of symmetry, focus, directrix, and latus rectum.
text: The key features of a parabola are its vertex, axis of symmetry, focus, directrix, and latus rectum.