Fill in the blanks and select the correct option.
(i) The side faces of a rectangular prism are ______ in shape.
(ii) If each face of a triangular pyramid is a/an ______ triangle, then it is a regular tetrahedron.
(iii) The sum of vertices and faces is always two ______ than edges in any polyhedron.
(iv) If a polyhedron has 12 faces and 25 vertices, then it has ______ edges.
| (i) | (ii) | (iii) | (iv) | |
|---|---|---|---|---|
| A | Triangular | Isosceles | more | 32 |
| B | Rectangular | Isosceles | less | 35 |
| C | Rectangular | Equilateral | more | 35 |
| D | Triangular | Equilateral | more | 35 |