Assertion: parabola's line | /r/CapableOf | pass through the focus
Facets:
value: to the directrix
type: TRANSITIVE-OBJECT
Source sentences:
text: dThe midpoint between the directrix and the focus falls on the parabola and is called theThe line that passes through the focus and the vertex is called the.
text: The line that passes through the vertex and focus is called the axis of symmetry (see Figure 1.)
text: In a parabola, a line passing through the focus and perpendicular to the directrix is called an “axis of symmetry.
text: A line that splits the parabola through the middle is known as the axis of symmetry; this line is also perpendicular to the directrix and passes through the focus.