No matter what type of container a book will still keep the shape
true of flase

Explanation:

true

because book is not a liquid form

Yes, No matter where you place the book, its shape would not change since a book is solid in state. Solids are rigid as their particles are tightly packed and held together with less or no spaces in between.

■Not a copied answer, i wrote it on my own.

hopefully,

Aria♡