If I understand the question correctly, it is a net.
tetrahedron
It's a cube.
octahedron
Octohedron, or rhomboid.
a polyhedron
An eight-face polyhedron is called an octahedron.
What polyhedron has eight sides and all of the are equilateral triangle?
pentagon
An octahedron.
tetrahedron
It's a cube.
Yes
octahedron
You're an octagon.
A regular octahedron.
Octohedron, or rhomboid.
A polyhedron is a 3-dimensional shape whose faces are all polygons.