Octahedron.
Octogon
Yes it is a tetrahedron
Tetrahedron - a pyramid with a triangular base.
7 faces
The answer is a polyhedron
square and hexagon
it is a triangle prism
Yes
Tetrahedron
pyramid
Octahedron.
Tetrahedron
There are many possible answers.
It is a tetrahedron = a triangle based pyramid.
yes it is called a octahedron
if you mean common: one of the triangle, square, and pentagon vertion of pyramid, dipyramid, and gyrolongated dipyramid. a total of 9.