All faces of a pyramid are always:
None of these
Explanation for the correct option:
Option (D) None of these
The faces of pyramids can be rectangular and triangular.
A pyramid is a three-dimensional shape. A pyramid has a polygonal base and flat triangular faces, which join at a common point called the apex. A pyramid is formed by connecting the bases to an apex. Each edge of the base is connected to the apex and forms the triangular face, called the lateral face. If a pyramid has an n-sided base, then it has faces, vertices, and edges. Based on the shape of the base of the pyramid, the pyramid is classified as a triangular pyramid, square pyramid, pentagonal pyramid.
Hence, option (D) is the correct option.