a pentagon.... it is pretty self explanatory.
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.
pentagon
A flat pentagon. Or some kind of circle pentagon breed...
It's a Pentagonal Prism or Pyramid.
A pentagonal pyramid.
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.
2
pentagon
Pentagon 2d shape is a pentagon 3d object is a pyramid.
Dodecahedron.
pentagon
a pentagonal pyramid or a pentagonal prisim
a 3D pentagon
A flat pentagon. Or some kind of circle pentagon breed...
It's a Pentagonal Prism or Pyramid.
A pentagonal pyramid.
A pentagon is a 2D shape. Volume and Surface Area is only found in 3D shapes.