A pentagonal pyramid has a total of 6 vertices. This includes the apex (the top point of the pyramid) and the 5 vertices that form the base, which is a pentagon.
To understand this better, visualize the shape: the base is flat and five-sided, consisting of 5 corners or points, while the apex is the point where all triangular faces of the pyramid converge. Adding these two groups together gives you the total count of 6 vertices.