A triangular based pyramid which is a tetrahedron has 4 faces, 6 edges and 4 vertices
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a triangle- based pyramid has 4 faces
a heptagonal pyramid has 8 faces
8 faces
An octagonal pyramid has 8 faces. * * * * * No. An octagonal pyramid has 9 faces - one octagonal base and 8 triangular faces meeting at an apex above the base.
5 faces