A pentagonal pyramid.
It is a nonahedron.
It is important to learn and remember the name of 3D shapes. A 19 faced 3d shape is called a nonadecahedron.
A cube or a cuboid
It's a Pentagonal Prism or Pyramid.
A 3-d shape made from pentagonal faces is a dodecahedron (12 sides).
Dodecahedron.
A six faced 3d shape is called a cube.
Decahedreon
It is a nonahedron.
It is important to learn and remember the name of 3D shapes. A 19 faced 3d shape is called a nonadecahedron.
An eight-faced 3D shape is called an octahedron. Any 3D shape (polyhedron) ends in -hedron, just like any 2D shape (polygon) ends in -gon, and octa- means 8.
tetrahedron is a 4 faced 3d shape.
It is called a trihedron. It does not exist.
A cube or a cuboid
It's a Pentagonal Prism or Pyramid.
An example of a common five faced three dimensional shape is the square pyramid. There are no three dimensional shapes with five edges.
A dodecahedron is a 3-d shape with 12 faces that are regular pentagons.