Chat with our AI personalities
It is a line segment.
I believe that is the definition of a straight line.
It is the locus of points such that the sum of their distance from two distinct fixed points is a constant.
The two fixed points are the foci but these do not define the shape of the ellipse. You also need to know the eccentricity.
A line in 2D and a plane in 3D A perpendicular bisector of the line connecting the 2 given points