It is a rectangle which is similar to (but smaller than) the rectangular base.
The shape is 3 dimensional, the top down view is 2 dimensional.
A rectangular pyramid is one possible answer.
Square Pyramid
a rectangular pyramid
the shape of the base of a rectangular pyramid is a rectangle.
If it is rectangular pyramid then it must be pyramidal in shape: otherwise it would not be called that!
rectangular pyramid and rectangularprism
It is a rectangle which is similar to (but smaller than) the rectangular base.
The shape is 3 dimensional, the top down view is 2 dimensional.
A rectangular-based pyramid.
rectangular pyramid
A rectangular pyramid is one possible answer.
rectangular prism pyramid
A triangle.
a rectangular pyramid
Square Pyramid