Well, darling, those solid figures with more than six faces are called polyhedrons. They're like the cool kids of geometry, strutting around with their multiple faces and edges. So next time you see one, just remember they're not just any old shape - they're polyhedrons, honey.
Icosahedron
an edge or in more simpler term "side"
If the faces are flat, it's a line.
Isosceles TetrahedronA solid with four faces is a tetrahedron. Each of the faces is a triangle. If all the triangles are congruent, you have an isosceles tetrahedron.
a cylinder a cylinder
A vertex is the name of a corner on a solid where three or more faces meet (plural = vertices).
It could be a triangular based pyramid whose technical name is a tetrahedron.
They have compound names which use Greek prefices for the number of faces, and the suffix "hedron".So, an octahedron would be a solid with 8 faces.
Icosahedron
an edge or in more simpler term "side"
A cube has six square faces.
a triangular prism
If the faces are flat, it's a line.
The solid with 12 equal faces is a dodecahedron. A dodecahedron has 12 equal pentagon surfaces.
an edge
a triangular prism.
triangular prism