1. If an n-prism has 16 vertices, then the number of sides of the bottom surface is N=(8). The prism has (24) sides and (8) sides, and the shape of the bottom surface is (8) polygon.

2. If the number of sides of a polyhedron is 8, then the number of faces of this polyhedron is (5).

3. An n prism has (3N) sides and (n) sides, and its bottom surface is (n) polygons.

4. An n prism has (N+2) faces and (3N) sides.

5. A triangular pyramid has (6) sides, a quadrangular pyramid has (8) sides and a decagon has (20) sides.

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