None!!!!
Every face is angles to its adjacent and opposite faces.
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The description given seems to fit that of a square based pyramid.
A triangular based pyramid has zero pairs of parallel faces. In a triangular based pyramid, all three faces of the base are not parallel to the apex, which means there are no pairs of parallel faces in this type of shape.
A square based pyramid has 8 edges and 5 faces.
A square pyramid will not have any curved faces.
None.