First, the 3 dimensional analogue of the triangle is the tetrahedron, and the answer is 4
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4
A 3-d triangle, or a tetrahedron, has 4 vertices.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. 16 vertices
None. A triangle is a 2-D figure, not a 3-D figure. Therefore, the concepts of faces and bases do not apply to it.
Vertices are points in a solid, or 3-D figure, where edges meet.