The side faces of a pyramid are:

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Triangle

Square

Rectangle

Circle

answer is A.

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Detailed Solution

Given a pyramid.
A pyramid is a three-dimensional figure that has its base as a polygon and all its faces are triangular.
It can also be defined as a structure whose outer surfaces are triangular and base may be a trilateral, quadrilateral or of any polygon shape.
The side face of any solid refers to the face that is not the top or the bottom face of the solid. We know the base of a pyramid is a polygon i.e. a triangle, square, rectangle, etc. Also, the outer faces of a pyramid will always be triangular.
So, the side faces of a pyramid are 'triangular' in shape.
Therefore, option (1) is correct.

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