In geometry, an octahedron is a polyhedron with eight sides. A regular octahedron is the dual polyhedron of a cube; It is a rectified tetrahedron.
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It look like two square based pyramids stuck together on their square sides.
An octahedron has 8 sides.An octahedron is a polyhedron with eight plane faces.
An octahedron has 8 sides.
a octahedron has 8 faces
An octahedron is a 3D shape with 8 sides.