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Write down the number of faces of each of the following figures:

A. Cuboid

B. Cube

C. Triangular prism

D. Square pyramid

E. Tetrahedron

Write down the number of edges of each of the following figures:

A. Tetrahedron

B. Rectangular pyramid

C. Cube

D. Triangular prism

Write down the number of vertices of each of the following figures:

B. Square pyramid

C. Tetrahedron

Fill in the blanks:

A. A cube has……… vertices, ………….edges and …………..faces.

B. The point at which three faces of a figure meet is known as its…………

C. A cuboid is also known as a rectangular…………..

D. A triangular pyramid is called a..………….

Define Euler's relation between the number of faces, number of edges and number of vertices for various 3-dimensional figures.

How many edges are there in a

A. cuboid

B. tetrahedron

C. triangular prism

D. square pyramid?

How many faces are there in a

A. cube

B. pentagonal prism

C. tetrahedron

D. pentagonal pyramid?

How many vertices are there in a

C. pentagonal prism

Verify Euler's relation for each of the following:

A. A cube

B. A tetrahedron

C. A triangular prism

D. A square pyramid