Mathematics for 9th Grade contains important chapters and new mathematical concepts, the full understanding of which is essential for all high school grades.This book is written in such a way that each student starts from the theory and its basic applications, continues with solving exercises, the difficulty of which progressively increases, and gradually reaches the level of solving complex problems. Each section of the book contains:

• Basic theory and its applications
• Solved exercises
• Comprehension questions
• Many exercises of all difficulty levels
• Combined topics
• Topics whose solutions require special mathematical thinking
• Topics from Greek and international mathematical competitions.

Additionally, at the end of the book, there are both the answers to the topics of this book and the detailed solutions to all the activities, questions, exercises, and problems of the school book. Also, at selected points in the material, there are evaluation criteria that will help you check if you have understood the corresponding material.