Assertion: parabola's axis | /r/CapableOf | pass through vertex
Facets:
Source sentences:
text: Notice that the axis of symmetry passes through the focus and vertex and is perpendicular to the directrix.
text: [link]. Notice that the axis of symmetry passes through the focus and vertex and is perpendicular to the directrix.
text: Notice that the axis of symmetry passes through the focus and vertex and is perpendicular to the directrix.
text: Notice that the axis of symmetry passes through the focus and vertex and is perpendicular to the directrix.
text: ~ An axis of symmetry is the line that passes through the focus and vertex.