Those are the pyramids.
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None, because there can be no such thing as a triangular square. If it is triangular it cannot be a square, if it is a square it cannot be triangular.
Uper-triangular Matrix A square matrix A whose elements aij=0 for i>j is called upper triangular matrix.
A triangular pyramid has a triangular base and three triangular faces meeting at its apex. A square pyramid has a square base and four triangular faces meeting at its apex.
square pyramid
The base of a triangular prism is a triangle and the base of a square pyramid is a square.