RD Sharma Class 9 Solutions Chapter 14 - Quadrilaterals (Ex 14.2) Exercise 14.2

Overview

RD Sharma Class 9 Maths Chapter- 14 primarily contains questions based on quadrilaterals. A polygon with 4 vertices or edges & 4 sides is called a quadrilateral. There are 4 internal angles present, the sum of the interior angles of quadrilateral results to 360 degrees. Evaluate a quadrilateral QWER, with internal angles Q, W, E & R. Then, ∠Q + ∠W + ∠E + ∠R = 360°. 

For developing a deep understanding of the topic, students are suggested to exercise RD Sharma textbooks daily. Quadrilaterals are classified based on their intersection nature. If they don't intersect, they are called simple quadrilaterals. Contrarily, if they happen to self-intersect, it is called a complex quadrilateral. Simple quadrilaterals are further classified into two parts- concave and convex quadrilateral, based on the position of diagonals and their interior angles.

The RD Sharma Maths Class 9 textbook follows the latest CBSE guidelines. In the 14th Chapter of Maths Class 9 RD Sharma, students will study important theories. These theories covered in RD Sharma Maths Class 9, Chapter-14, Quadrilaterals includes- Angle Sum Property of a Quadrilateral; Conditions for a Quadrilateral to Be a Parallelogram; Concept of Quadrilaterals, i.e. sides, Adjacent Sides, Opposite Sides, Angle, Adjacent Angles and Opposing Angles, diagonals of a parallelogram bisect each other at intersection points, the opposing Angles of a Parallelogram are always equal, the opposite sides of a Parallelogram Are of Equal Length., The Mid-point Theorem- a diagonal of a parallelogram splits it into two congruent triangles. If each pair of opposite angles are equal in a quadrilateral, then it's a Parallelogram. Diagonals bisecting a quadrilateral will make it a Parallelogram. Number of Exercises in RD Sharma Chapter-14 Quadrilaterals are:

• Exercise 13.1- 4 questions

• Exercise 13.2- 17 questions

• Exercise 13.3- 9 questions

• Exercise 13.4- 22 question