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There are an infinite number of 3d shapes with more than 20 faces.
dodecahedron
A cylinder.
Rectangular prism
Infinitely many.
There are an infinite number of 3d shapes with more than 20 faces.
dodecahedron
An octagonal prism.
a cube
a piramid
Rectangular prism
a pyramid
A cylinder.
A pyramid.
a rectangular prism
Infinitely many.
Technically it is impossible for a 3d figure to have 3 faces. The least amount of faces that are possible is four.