Ncert solutions

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1. NCERT Solutions - Mathematics , Class 8

CHAPTERS

1. Rational Numbers

2. Linear Equations in One Variable

3. Understanding Quadrilaterals

4. Data Handling

5. Squares and Square Roots

6. Cubes and Cube Roots

7. Comparing Quantities

8. Algebraic Expressions and Identities

9. Visualising Solid Shapes

10. Mensuration

11. Exponents and Powers

12. Direct and Inverse Proportions

13. Factorisation

14. Introduction to Graphs

15. Playing with Numbers

EXERCISES

1. Exercise 3.1

2. Exercise 3.2

3. Exercise 3.3

4. Exercise 3.4

Q1) Given here are some figures.

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

(viii)

Classify each of them on the basis of the following.

(a) Simple curve (b) Simple closed curve (c) Polygon

(d) Convex polygon (e) Concave polygon

Q2) How many diagonals does each of the following have?

(a) A convex quadrilateral

(b) A regular hexagon

(c) A triangle

Q3) What is the sum of the measures of the angles of a convex quadrilateral? Will this property

hold if the quadrilateral is not convex? (Make anon-convex quadrilateral and try!)

Q4) Examine the table. (Each figure is divided into triangles and the sum of the angles

deduced from that.)

Part-2

What can you say about the angle sum of a convex polygon with number of sides?

(a) 7 (b) 8 (c) 10 (d) n

Q5) What is a regular polygon?

State the name of a regular polygon of

(i) 3 sides (ii) 4 sides (iii) 6 sides

Q7)

Find x+y+z

Find x+y+z+w

Q6) Find the angle measure x in the following figures.

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NCERT Solutions - Mathematics , Class 8

Rational Numbers

Linear Equations in One Variable

Understanding Quadrilaterals

Data Handling

Squares and Square Roots

Cubes and Cube Roots

Comparing Quantities

Algebraic Expressions and Identities

Visualising Solid Shapes

Mensuration

Exponents and Powers

Direct and Inverse Proportions

Factorisation

Introduction to Graphs

Playing with Numbers

Exercise 3.1

Exercise 3.2

Exercise 3.3

Exercise 3.4

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