12, if you mean a dodecahedron, a 3-d figure with only pentagonal faces.
A flat pentagon. Or some kind of circle pentagon breed...
5 edges, 5 verts, and faces are only on 3d shapes, for the most part, so any 2d shape has 1
It depends on what you mean by a 3-d pentagon. To most people, a 3-d pentagon is a dodecahedron - a 3d shape with 12 pentagonal faces. In that case, each of the faces, by definition, must be a pentagon! If you mean a pentahedron - a 3d shape with 5 plane faces, it could be a triangular prism or a quadrilateral based pyramid. In the first cae the bases are triangles, in the second, a quadrilateral.
A 3-d shape made from pentagonal faces is a dodecahedron (12 sides).
An edge of a 3-d pentagon is the intersection of two of its adjacent faces.
If you are thinking of a solid with pentagonal faces, a dodecahedron, there are twelve pentagons
It is a dodecahedron - a shape with 12 faces which are regular pentagons.
the other faces on a pentagonal prism would be rectangular
A 3D pentagon could be called a pentagon prism or a dodecahedron which is a Platonic solid with 12 pentagonal faces.
12, if you mean a dodecahedron, a 3-d figure with only pentagonal faces.
A flat pentagon. Or some kind of circle pentagon breed...
A pentagon is a 2 dimensional object. The 3 dimensional object, with 12 pentagonal faces, is called a dodecahedron.
5 edges, 5 verts, and faces are only on 3d shapes, for the most part, so any 2d shape has 1
a 3D pentagon
It depends on what you mean by a 3-d pentagon. To most people, a 3-d pentagon is a dodecahedron - a 3d shape with 12 pentagonal faces. In that case, each of the faces, by definition, must be a pentagon! If you mean a pentahedron - a 3d shape with 5 plane faces, it could be a triangular prism or a quadrilateral based pyramid. In the first cae the bases are triangles, in the second, a quadrilateral.
6 faces