Assertion: parabola's directrix | /r/HasProperty | same distance
Facets:
value: to the left of the vertex
type: LOCATION
Source sentences:
text: The focus will be to the right of the vertex, and the directrix will be a vertical line that is the same distance to the left of the vertex that the focus is to the right.
text: You should also know that the focus and the directrix are the same distance away from the vertex of the parabola.