3 more vertices
12
A rectangular prism has 8 vertices.
Rectangular prism - 8 Rectangular pyramid - 5 8-5 = 3 Answer: 3
3 more.
2 more vertices
3 more
None. A non-existent pyramid has no vertices.
it has 7 vertices
10
A square pyramid has 5 vertices
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges. 6 - 5 = 1 more
16 edges, 9 vertices.