octahedron
octahedron
What polyhedron has eight sides and all of the are equilateral triangle?
Octahedron- A polyhedron with eight faces. All faces of a regular octahedron are congruent, equilateral triangles.
An octahedron.
tetrahedron
an octahedron
A regular octahedron.
You're an octagon.
Octohedron, or rhomboid.
A regular octahedron.
A regular octahedron.
Tetrahedron, icosahedron.