A triangular prism has 6 vertices.
To understand why, let’s visualize a triangular prism. It consists of two triangular bases and three rectangular sides connecting the corresponding edges of the triangles. Each triangular base has 3 vertices. So, for two triangular bases, we calculate the total number of vertices as follows:
3 vertices (from the first triangle) + 3 vertices (from the second triangle) = 6 vertices in total.
Thus, a triangular prism has 6 vertices.