When matter is in a solid state, its atoms or molecules have a random arrangement

Explanation

When matter is in a solid state, its atoms or molecules are arranges in definite, fixed patterns.

In a different type of solid, not even called a solid in some books, the atoms and molecules have a random arrangement.  Glass is of this type, called and amorphous or a  supercooled liquid.  Most of us would rather not call glass a liquid, but what about margarine, is it solid or liquid? (it is amorphous).