1. NCERT Solutions - Mathematics , Class 8
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
11. Exponents and Powers
12. Direct and Inverse Proportions
14. Introduction to Graphs
15. Playing with Numbers
1. Exercise 3.1
2. Exercise 3.2
3. Exercise 3.3
4. Exercise 3.4
Q1) Given here are some figures.
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.)
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
Q6) Find the angle measure x in the following figures.
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NCERT Solutions - Mathematics , Class 8
Linear Equations in One Variable
Squares and Square Roots
Cubes and Cube Roots
Algebraic Expressions and Identities
Visualising Solid Shapes
Exponents and Powers
Direct and Inverse Proportions
Introduction to Graphs
Playing with Numbers
Race To Space
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