Assertion: parabola | /r/HasProperty | a plane curve
Facets:
value: in mathematics
type: OTHER
Source sentences:
text: In mathematics, a parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped.
text: First and foremost, a parabola is a plane-curve that appears U-shaped and is mirror-symmetrical.
text: A parabola is a plane curve, every point of which has the property that the distance to a fixed point (called the focus of the parabola ) is equal to the distance to a straight line (the directrix of the parabola ).