that's easy its a triangle
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That is such a nonsensical answer! A triangle is not even a polyhedron.
The correct answer is an octahedron - two square based pyramids stuck together along their bases.
it is afrog
Octahedron- A polyhedron with eight faces. All faces of a regular octahedron are congruent, equilateral triangles.
octahedron
What polyhedron has eight sides and all of the are equilateral triangle?
An octahedron.
tetrahedron
A regular octahedron.
You're an octagon.
A regular octahedron.
Princess cut diamonds
diamond/octahedron
A deltahedron is a polyhedron which is composed of equilateral triangles as faces.