You can have a 3d shape with any no of sides 3d only means there are three measure needed to calculate volume, or in other words you can pick it up and touch it. These three measurements are width, depth and height. If the faces all had to be of the same area and flat there might not be a 7 sided 3d shape (or a regular one at least) there can always be a n-sided non-irregular shape even a 1,253,703-sided irregular shape is theoretically possible.
The 3d shape that have five faces would be a triangular prism **************** or a pyramid
Pryimaid
its a 3d shape with 3 faces
youtadecahedron
Icosahedron
A Pyramid is a 7 lettered 3D shape with triangular faces.
heptahedron
heptahedron
a square
The 3d shape that have five faces would be a triangular prism **************** or a pyramid
Pryimaid
A hexagon based pyramid.
A 3d shape with 5 faces can be a square pyramid
3d shape Well actually it is a Cube
A hexagon based pyramid.
It cannot be a simply connected 3d shape because it does not satisfy the Euler characteristic.
No 3D shape with FLAT SIDES has exactly 3 faces. 4 is the minimum.