R d sharma solutions mathematics class 9 Solutions for Chapter 14 quadrilaterals

Exercises in Chapter 14 quadrilaterals Grade 9

Quadrilaterals Exercise 14.1

Quadrilaterals Exercise 14.2

Quadrilaterals Exercise 14.4

Questions in Quadrilaterals Exercise 14.1

Three angles of a quadrilateral are respectively equal to $110^0,50^0,40^0$ . Find its fourth angle.

In a quadrilateral ABCD, CO and DO are the bisectors of ∠C and ∠D respectively. Prove that ∠COD = 1/2 (∠A + ∠B).

Questions in Quadrilaterals Exercise 14.2

Find the measure of all the angles of a parallelogram, if one angle is $24^0$ 0 less than twice the smallest angle.

The perimeter of a parallelogram is 22cm. If the longer side measures 6.5cm what is the measure of the shorter side?

Questions in Quadrilaterals Exercise 14.4

In a ΔABC, BM and CN are perpendiculars from B and C respectively on any line passing through A. If L is the mid-point of BC, prove that ML = NL.

In figure, M, N and P are mid-points of AB, AC and BC respectively. If MN = 3 cm, NP = 3.5 cm and MP = 2.5 cm, calculate BC, AB and AC.

ABC is a triangle and through A, B, C lines are drawn parallel to BC, CA and AB respectively intersecting at P, Q and R. Prove that the perimeter of ΔPQR is double the perimeter of ΔABC.

Was This helpful?

Chapters in this book

Number System

Exponents Of Real Numbers

Rationalisation

Algebraic Identities

Factorization Of Algebraic Expressions

Factorization Of Polynomials

Introduction To Euclid’s Geometry

Lines And Angles

Triangle And Its Angles

Congruent Triangles

Coordinate Geometry

Herons Formula

Linear Equations In Two Variables

Quadrilaterals

Areas Of Parallelograms And Triangles

Circles

Constructions

Surface Area And Volume Of A Cuboid And Cube

Surface Area And Volume Of a Right Circular Cylinder

Surface Area And Volume Of a Right Circular Cone

Surface Area And Volume Of Sphere

Tabular Representation Of Statistical Data

Graphical Representation Of Statistical Data

Measures Of Central Tendency

Probability

Lido

Courses

Teachers

Book a Demo with us

Syllabus

Maths
CBSE

Grade 1

Grade 2

Grade 3

Grade 4

Grade 5

Grade 6

Grade 7

Grade 8

Grade 9

Grade 10

Maths
ICSE

Class 1

Class 2

Class 3

Class 4

Class 5

Class 6

Class 7

Class 8

Science
CBSE

Grade 5

Grade 6

Grade 7

Grade 8

Grade 9

Grade 10

Science
ICSE

Class 5

Class 6

Class 7

Class 8

Class 9

English
CBSE

Grade 1

Grade 2

Grade 3

Grade 4

Grade 5

Grade 6

Grade 7

Grade 8

Grade 9

Grade 10

English
ICSE

Class 4

Class 5

Class 6

Class 7

Coding

Grade 1

Grade 2

Grade 3

Grade 4

Grade 5

Grade 6

Grade 7

Grade 8

Grade 9

Quick Links

Terms & Policies

Selina Question Bank

Maths

Physics

Biology

Allied Question Bank

Chemistry

Connect with us on social media!