Define prism and draw a rough diagram of triangular prism. Also verify the Euler's formula for the same.

Prism: A prism is a solid whose bases are identical polygon faces and the other faces are rectangles. A triangular prism has triangle at the ends.

Diagram:

Verification of Euler's formula:

Here, F = 5, V = 6 and E = 9

Thus, F + V - E = 5 + 6 - 9 = 11 - 9 = 2

That is, F + V - E = 2

Hence, Euler's formula is verified.