Theyre 3d
a hexagonal pyramid is a 3-d shape with two hexagonal bases and three triangular faces!
A pyramid has a pointy top and it is a 3D shape.
pyramid of dreams :D
An edge is the intersection of two faces on a 3-D figure like a prism or pyramid.
A square based pyramid is a 3-d object. It does not have a 2-d name!
Three possibilities that spring to mind are: a diquadrilateral pyramid (two quadrilateral based pyramids with their bases stuck together) or a pentagonal pyramid or a triangular prism.
-2
No. A prisim and a pyramid are 2 different 3-D shapes.
A square-based pyramid and a trapezoidal prism.
A quadrilateral based pyramid, of which a square based pyramid would be a special case.
pyramids. :D
2 D