Follow the steps below when creating a solid pyramid.
Using the Function:
Select Pyramid from the Create>Primitive Solid options. The Create Pyramid dialog is then displayed.
Indicate the settings by which the pyramid is to be created, and select OK when done.
Indicate a base center position through the position menu.
The pyramid is created per your specifications and at the base center position your specified.
Above > Pyramid created using the default settings (View 7)