Yes, a polyhedron is only made up of one base which is bordered by straight lines. Each face is in fact a polygon, a closed shape in the flat 2-dimensional plane made up of points joined by straight lines.
A tetrahedron.
Tetrahedron
It depends on which method of tag you are playing
a base
Tetrahedron
pyramid .
A polyhedron has only polygonal faces and any one of them can be considered a base. Therefore a polyhedron with 0 bases cannot exist.
It is a pentagon.
It is a pentagon.
A cone.
This is a "trigonal pyramid" or "tetrahedron."
That seems to fit the description of a pyramid
No, it cannot.
a base
it is a term for a face , its different for all, if the polyhedron is based off a 2d polygon, it is the side with that shape(usualy)(their may be more than one)
Because the literal meaning of polyhedron means 'many faces' A sphere has only one face.
False