Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

For the following solid, identify the front, side and top views and write them in the space provided.

For the following solid, identify the front, side and top views and write them in the space provided.

Tell what property allows you to compute `1/3 xx(6xx4/3)` as `(1/3 xx 6) xx 4/3`

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

Figure
Side	3	4	5	6
Angle sum	180°	2 × 180° = (4 − 2) × 180°	3 × 180° = (5 − 2) × 180°	4 × 180° = (6 − 2) × 180°

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

a) 7

b) 8

c) 10

d) n

What is a regular polygon?

Find the measure of each exterior angle of a regular polygon of 9 sides.

Find the measure of each exterior angle of a regular polygon of 15 sides

How many sides does a regular polygon have if the measure of an exterior angle is 24°?

How many sides does a regular polygon have if each of its interior angles is 165°?

Is it possible to have a regular polygon with measure of each exterior angle as 22°?

Can it be an interior angle of a regular polygon? Why?

What is the minimum interior angle possible for a regular polygon? Why?

Construct the following quadrilaterals.

Quadrilateral MORE

MO = 6 cm

OR = 4.5 cm

∠M = 60°

∠O = 105°

∠R = 105°

Construct the following quadrilaterals.

Quadrilateral PLAN

PL = 4 cm

LA = 6.5 cm

∠P = 90°

∠A = 110°

∠N = 85°

Construct the following quadrilaterals.

Parallelogram HEAR

HE = 5 cm

EA = 6 cm

∠R = 85°

Construct the following quadrilaterals.

Rectangle OKAY

OK = 7 cm

KA = 5 cm

Find the square of the given number.

32

Find the square of the given number.

35

Find the square of the given number.

86

Find the square of the given number.

93