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An octahedron is a three-dimensional geometric shape with eight flat faces, and the most common type—called a regular octahedron—is made up of eight identical equilateral triangles arranged so that four triangles meet at each corner point. While regular octahedra are important as one of the five Platonic solids, many other irregular octahedra exist with different shapes and properties.
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Article · Italiano
In geometria solida, l'ottaedro è un poliedro con otto facce triangolari. L'ottaedro regolare è uno dei cinque solidi platonici, le cui facce sono triangoli equilateri. Ha sei vertici e dodici spigoli.
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