There is no regular solid with 13 faces.
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A polyhedron (solid shape formed by plane faces) with four faces is called a tetrahedron.
A tetrahedron, also called a pyramid is a three-dimensional shape with four faces.
hello this is me i am 11 years old but i still don't know what a 3D shape with 12 faces is called
Icosagon
well. it is called icosahedron