no, the three sides converge at the top. and the bottom does not have an opposite side.
Pyramids can be constructed on a square/rectangle base or a triangle base. Faces are parallel or otherwise accordingly
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There are 257 topologically different convex octahedra. Many of these will have no parallel faces. It can have four pairs of parallel faces.
A pyramid never has parallel faces. Any two faces intersect.
Pentagonal pyramids have six faces, ten edges, and six vertices. One of the faces is a pentagonal base, the rest are triangular.
Zero parallel faces in a triangular pyramid. There are four faces, and none of them are parallel to each other.
Do pyramids have perpendicular faces ?