All faces of a pyramid are always

1

(a)

triangular

(b)

rectangular

(c)

congruent

(d)

None of these

Out of the following, which is a 3-D figure?

1

(a)

Square

(b)

Sphere

(c)

Triangle

(d)

Circle

Total number of edges a cylinder has

1

(a)

0

(b)

1

(c)

2

(d)

3

When we cut a corner of a cube as shown in the figure, we get the cut-out piece as

1

(a)

square pyramid

(b)

trapezium prism

(c)

triangular pyramid

(d)

a triangle

If we rotate a right angled triangle of height 5 cm and base 3 cm about its height a full turn, we get

1

(a)

cone of height 5 cm, base diameter 3 cm

(b)

triangle of height 5 cm, base diameter 3 cm

(c)

cone of height 5 cm, base diameter 6 cm

(d)

triangle of height 5 cm, base diameter 6 cm

The common portion of two adjacent faces of a cuboid is called a/an-----

1

(a)

edge.

An example of solid with no vertex is ------

1

(a)

sphere.

A triangular pyramid has ------ faces ----- edges and ------ vertices.

1

(a)

4 faces, 6 edges and 4 vertices.

A square pyramid has ------- faces,------ edges and ------ vertices.

1

(a)

5 faces, 8 edges and 5 vertices.

is a net of a -----

1

(a)

triangular prism.

A triangular prism has 5 faces, 9 edges and 6 vertices.

1

(a) False

(b) True

If the base of a pyramid is a square, it is called a square pyramid.

1

(a) False

(b) True

A rectangular pyramid has 5 rectangular faces.

1

(a) True

(b) False

While rectangle is a 2-D figure, cuboid is a 3-D figure.

1

(a) False

(b) True

While sphere is a 2-D figure, circle is a 3-D figure

1

(a) True

(b) False

Here, you find four nets. There are two correct nets among them to make a tetrahedron. See if you can work out, which nets will make a tetrahedron

2

(a)

What will be the base of a square pyramid?

2

(a)

Use isometric dot paper and make an isometric sketch for each one of the given shapes

2

(a)

Write the number of faces, edges and vertices in the solids given below:
Triangular pyramid

2

(a)

Three cubes each with 2 cm edge are placed side by side to form a cuboid. Try to make an oblique sketch and say what could be its length, breadth and height.

2

(a)

Give an oblique sketch for the following:
A cube with an edge 4 cm long.

3

(a)

Make a net for given cone

3

(a)

The following diagrams show the nets of various solids. Name the solids.

3

(a)

Solve the number riddles:

Add four to six times a number,
To get exactly sixty four!
Perfect credit is yours to ask for
If you instantly tell the score!

3

(a)

I have 2 vats each containing 2 mats. 2 cats sat on each of the mats. Each cat wore 2 funny old hats. On each hat lay 2 thin rats. On each rat perchaed 2 black bats. How many things are in my vats?

3

(a)

Draw the top, side and front views of the solids given below in figures

5

(a)

Draw a net of the solid given in the figure

5

(a)