If you are talking about a hard copy composition of papers, usually bonded together with a cover, it would probably be a solid.
The solid shape for a book is a cube
solido
solid
a book
solido
A book is considered a solid object, not a substance. It is made up of paper, ink, and binding materials that give it its physical form.
If your math book is solid, it likely means that the concepts and principles within it are well-founded and reliable. A solid math book provides clear explanations, thorough examples, and effective problem-solving strategies. This type of resource can greatly enhance understanding and confidence in mathematics, making it easier to tackle complex problems. Ultimately, a solid math book serves as a valuable tool for learning and mastery of the subject.
Go read a book
desk,ruler,book
being one who read the book i think that the better book is "twilight" as the story is more rock solid
Online at First Tuesday Book Club
A tape measure or ruler, A book on solid geometry, A calculator or computer.