In soccer, the "football" is what they call the specific type of ball used in the game. The Laws of the Game define the exact size, shape, material, and pressure that is to be used.
A solid has a defined shape and volume
None. It is mathematically impossible.
A liquid has a define shape but a gas has no define shape
any 4 sided 2d shape * * * * * Mathematically, any plane shape, no matter how many sides.
liquid has a definite volume and takes on the shape of its container.
Solids have a define shape since the particles are cooled down. This brings the molecules close together which forms a fixed shape.
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.
The shape is a four-sides shape, it is a polygon