It is called a hexagon because it has six faces and also six vertexes.
Two.
Solid figures are normally named after their number of faces.
'Enneahedron' - a solid figure with nine faces
a cone
A solid figure with twenty faces is called an Icosahedron.
square based pyramid, And vertexes is not a word, they are called a vertex(singular) or vertices(plural)
were two or more faces of a solid figure
The tetrahedron, consisting of four regular triangles.
A square-based pyramid.
The solid figure that has the same number of faces and vertices and has 8 edges is a cube. A cube has 6 faces, 8 vertices, and 12 edges, so it fits the description given.
Hexahedron