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Chapter 8 Class 9 Quadrilaterals

Master Chapter 8 Class 9 Quadrilaterals with comprehensive NCERT Solutions, Practice Questions, MCQs, Sample Papers, Case Based Questions, and Video lessons.

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Updated from new NCERT Books - 2023-24

Get solutions of all NCERT Questions, Exercises and Theorems of Chapter 8 Class 9 Quadrilateral free at teachoo. Answers to all questions have been solved in an easy way, with video of each and every question.

 

In this chapter, we will learn - 

  • What is a Quadrilateral
  • Angle sum property of a quadrilateral
  • Different Types of Quadrilateral - Trapezium, Kite, Parallelogram, Rhombus, Rectangle, Square
  • Properties of Parallelogram
    • Diagonals of a parallelogram divides it into two congruent triangles  - with Proof (Theorem 8.1)
    • Opposite sides are equal in a parallelogram, and its converse  - with Proof (Theorem 8.2 and Theorem 8.3)
    • Opposite angles are equal in a parallelogram, and its converse  - with Proof (Theorem 8.4 and Theorem 8.5)
    • Diagonals of a parallelogram bisect each other, and its converse  - with Proof (Theorem 8.6 and Theorem 8.7)
  • A special condition to prove parallelogram - A quadrilateral is a parallelogram if a pair of opposite sides is equal and parallel (Theorem 8.8)
  • Mid-point Theorem, and its converse  - with Proof (Theorem 8.9 and Theorem 8.10)

 

Here, the chapter is divided into 2 parts - Concept Wise, and Serial Order Wise.

In Serial Order Wise, just like the NCERT Book - you can check exercises and examples. This is useful when you want to check a particular question.

In Concept Wise, Teachoo (टीचू) has divided the chapter into different concepts. First the concept is explained, and then the questions of that concept is done - from easy to difficult.

 

Click on a click below to get started

 

Serial order wise

Ex 8.1 Start Learning
Ex 8.2 Start Learning
Examples Start Learning
Theorems Start Learning

Concept wise

Previous topics Start Learning
Definitions Start Learning
Opposite sides of parallelogram Start Learning
Opposite angles of parallelogram Start Learning
Diagonal of parallelogram Start Learning
Theorem 8.8 Start Learning
Mid point theorem Start Learning

Why Learn This With Teachoo?

Updated from new NCERT Books - 2023-24

Get solutions of all NCERT Questions, Exercises and Theorems of Chapter 8 Class 9 Quadrilateral free at teachoo. Answers to all questions have been solved in an easy way, with video of each and every question.

 

In this chapter, we will learn - 

  • What is a Quadrilateral
  • Angle sum property of a quadrilateral
  • Different Types of Quadrilateral - Trapezium, Kite, Parallelogram, Rhombus, Rectangle, Square
  • Properties of Parallelogram
    • Diagonals of a parallelogram divides it into two congruent triangles  - with Proof (Theorem 8.1)
    • Opposite sides are equal in a parallelogram, and its converse  - with Proof (Theorem 8.2 and Theorem 8.3)
    • Opposite angles are equal in a parallelogram, and its converse  - with Proof (Theorem 8.4 and Theorem 8.5)
    • Diagonals of a parallelogram bisect each other, and its converse  - with Proof (Theorem 8.6 and Theorem 8.7)
  • A special condition to prove parallelogram - A quadrilateral is a parallelogram if a pair of opposite sides is equal and parallel (Theorem 8.8)
  • Mid-point Theorem, and its converse  - with Proof (Theorem 8.9 and Theorem 8.10)

 

Here, the chapter is divided into 2 parts - Concept Wise, and Serial Order Wise.

In Serial Order Wise, just like the NCERT Book - you can check exercises and examples. This is useful when you want to check a particular question.

In Concept Wise, Teachoo (टीचू) has divided the chapter into different concepts. First the concept is explained, and then the questions of that concept is done - from easy to difficult.

 

Click on a click below to get started