1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

RD Sharma - Mathematics

8. Lines and Angles

1. Number System
2. Exponents of Real Numbers
3. Rationalisation
4. Algebraic Identities
5. Factorization of Algebraic Expressions
6. Factorization of Polynomials
7. Introduction to Euclid's Geometry
8. Lines and Angles
9. Triangle and Its Angles
10. Congruent Triangles
11. Co-ordinate Geometry
13. Linear Equations in Two Variables
12. Heron's Formula
14. Quadrilaterals
15. Areas of Parallelograms
16. Circles
17. Constructions
18. Surface Area and Volume of a Cuboid and a Cude
19. Surface Area and Volume of a Right Circular Cylinder
20. Surface Area and Volume of a Right Circular Cone
21. Surface Area and Volume of a Sphere
22. Tabular Representation of Statistical Data
23. Graphical Representation of Statistical Data
24. Measures of Central Tendency
25. Probability

Exercise 8.1

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Exercise 8.2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Exercise 8.3

1 2 3 4 5 6 7 8 9 10 11 12 13

Exercise 8.4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

CCE - Formative Assessment

1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Q. 234.2( 5 Votes )

In Fig. 8.135, if

Class 9th RD Sharma - Mathematics 8. Lines and Angles

Answer :

Since, AB ‖ CD

And, BD cuts them

y + 2y + y + 5y = 180^o (Consecutive interior angle)

9y = 180^o

y = 20^o

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

PREVIOUSIn Fig. 8.134, if NEXTIn Fig. 8.136, if

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation

caricature

view all courses

RELATED QUESTIONS :

In Fig 8.117, RD Sharma - Mathematics

In Fig 8.116, if RD Sharma - Mathematics

In Fig. 8.136, ifRD Sharma - Mathematics

In Fig. 8.142, ifRD Sharma - Mathematics

In Fig. 8.138, ifRD Sharma - Mathematics

In Fig. 8.131, ifRD Sharma - Mathematics

In Fig 8.121, armRD Sharma - Mathematics

In Fig. 8.139, ifRD Sharma - Mathematics

In the given figuRS Aggarwal & V Aggarwal - Mathematics

In the given figuRS Aggarwal & V Aggarwal - Mathematics