Read and download the Chapter 8 Quadrilaterals PDF from the official NCERT Book for Class 9 Mathematics. Updated for the 2025-26 academic session, you can access the complete Mathematics textbook in PDF format for free.
NCERT Class 9 Mathematics Chapter 8 Quadrilaterals Digital Edition
For Class 9 Mathematics, this chapter in NCERT Book Class 9 Maths Quadrilaterals Questions provides a detailed overview of important concepts. We highly recommend using this text alongside the NCERT Solutions for Class 9 Mathematics to learn the exercise questions provided at the end of the chapter.
Chapter 8 Quadrilaterals NCERT Book Class Class 9 PDF (2025-26)
(A) Main Concepts and Results
Sides, Angles and diagonals of a quadrilateral; Different types of quadrilaterals: Trapezium, parallelogram, rectangle, rhombus and square.
• Sum of the angles of a quadrilateral is 360º,
• A diagonal of a parallelogram divides it into two congruent triangles,
• In a parallelogram
(i) opposite angles are equal
(ii) opposite sides are equal
(iii) diagonals bisect each other.
• A quadrilateral is a parallelogram, if
(i) its opposite angles are equal
(ii) its opposite sides are equal
(iii) its diagonals bisect each other
(iv) a pair of opposite sides is equal and parallel.
• Diagonals of a rectangle bisect each other and are equal and vice-versa
• Diagonals of a rhombus bisect each other at right angles and vice-versa
• Diagonals of a square bisect each other at right angles and are equal and vice-versa
• The line-segment joining the mid-points of any two sides of a triangle is parallel to the third side and is half of it.
Please refer to attached file for NCERT Class 9 Maths Quadrilaterals Questions
| NCERT Book Class 9 Maths Number Systems |
| NCERT Book Class 9 Maths Number Systems Questions |
| NCERT Book Class 9 Maths Polynomials |
| NCERT Book Class 9 Maths Polynomials Questions |
| NCERT Book Class 9 Maths Coordinate Geometry |
| NCERT Book Class 9 Maths Coordinate Geometry Questions |
| NCERT Book Class 9 Maths Linear Equations In Two Variables |
| NCERT Book Class 9 Maths Linear Equations In Two Variables Questions |
| NCERT Book Class 9 Maths Introduction To Euclids Geometry |
| NCERT Book Class 9 Maths Introduction To Euclids Geometry Questions |
| NCERT Book Class 9 Maths Lines And Angles |
| NCERT Book Class 9 Maths Lines And Angles Questions |
| NCERT Book Class 9 Maths Triangles |
| NCERT Book Class 9 Maths Triangles Questions |
| NCERT Book Class 9 Maths Quadrilaterals |
| NCERT Book Class 9 Maths Quadrilaterals Questions |
| NCERT Book Class 9 Maths Herons Formula |
| NCERT Book Class 9 Maths Herons Formula Questions |
| NCERT Book Class 9 Maths Surface Areas And Volumes |
| NCERT Book Class 9 Maths Surface Areas And Volumes Questions |
| NCERT Book Class 9 Maths Statistics |
| NCERT Book Class 9 Maths Statistics and Probability Questions |
Important Practice Resources for Class 9 Mathematics
NCERT Book Class 9 Mathematics Chapter 8 Quadrilaterals
Download the official NCERT Textbook for Class 9 Mathematics Chapter 8 Quadrilaterals, updated for the latest academic session. These e-books are the main textbook used by major education boards across India. All teachers and subject experts recommend the Chapter 8 Quadrilaterals NCERT e-textbook because exam papers for Class 9 are strictly based on the syllabus specified in these books. You can download the complete chapter in PDF format from here.
Download Mathematics Class 9 NCERT eBooks in English
We have provided the complete collection of NCERT books in English Medium for all subjects in Class 9. These digital textbooks are very important for students who have English as their medium of studying. Each chapter, including Chapter 8 Quadrilaterals, contains detailed explanations and a detailed list of questions at the end of the chapter. Simply click the links above to get your free Mathematics textbook PDF and start studying today.
Benefits of using NCERT Class 9 Textbooks
The Class 9 Mathematics Chapter 8 Quadrilaterals book is designed to provide a strong conceptual understanding. Students should also access NCERT Solutions and revision notes on studiestoday.com to enhance their learning experience.
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