Definite shape and volume is a state that defines solid.
Your thinking of the six sided die.
A 2 dimensional shape such as a circle is NOT a solid shape, while a sphere is.
what ever shape the solid is x_x
The solid shape for a book is a cube
well it depends what shape is the solid. it could be a sqare solid or circle solid
it is the property of solid- a solid has definite shape & volume.
it is a plane shape because you said its a square
It has a fixed shape and volume
a solid keeps it shape unless it is broken
the difference between a two dimensional shape and and a solid is that a two dimensional shape is plane and a solid you can see the whole shape a the inside.
What is a solid shape