its a dedrehedron
* * * * *
Sadly, a dedrehedron does not exist. Fotunately, though, a regular octahedron does and it meets the specifications in the question.
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.
A regular octahedron.
You're an octagon.
Princess cut diamonds
octahedron
A deltahedron is a polyhedron which is composed of equilateral triangles as faces.