the foci (2 focal points) and the distance between the vertices.
The two foci are necessary to define the location of an ellipse, but the shape depends on the eccentricity, which is related to the lengths of the two axes.
guadrilateral
The width reduces as the length increases. The changes shape of the curve is a part of a [rectangular] hyperbola.
change of position, shape, or size of figure
if you multiply all the points by one you get the same points so the shape stays the same.
The two fixed points are the foci but these do not define the shape of the ellipse. You also need to know the eccentricity.
The two foci are necessary to define the location of an ellipse, but the shape depends on the eccentricity, which is related to the lengths of the two axes.
An ellipse, a hyperbola.
a sphere
Sphere, Hyperbola and Flat.
Hyperbola
Coplanar means "on the same plane". A plane can be a figure or shape like a rectangle. Coplanar points means points that belong on the same plane.
A right hyperbola shape.
A gas has no fixed volume or shape.
Liquids have no definite shape; they take the shapes of their containers.Gases also have no definite shape, they take up any available space.
It is the set of points, in 3-dimensional space, defined by the intersection of two planes which define faces of the shape.
Solids are substances which have a fixed volume and fixed shape. Liquids, on the other hand, have a fixed volume but no definite shape. Finally, gases don't have a definite volume or shape.