Assertion: parabola | /r/CapableOf | call the focus
Facets:
value: to a point on a line
type: TRANSITIVE-OBJECT
Source sentences:
text: A parabola is the set of all points equidistant from a point F, called the focus to a point on a line, called the directrix.
text: A parabola is the set of all points equidistant from a point F, called the focus to a point on a line, called the directrix.
text: They're also the shape used for satellite dishes, reflectors and the like, because they concentrate all rays that enter them into a single point inside the bell of the parabola, called the focus.