Oktahedron
| Artikel ini adalah bagian dari seri: |
| Matematika |
|---|
| Oktahedron beraturan | |
|---|---|
(Klik disini untuk melihat model berputar) | |
| Jenis | Bangun ruang Platonik |
| shortcode | 4<> 3z |
| Elemen | F = 8, E = 12 V = 6 (χ = 2) |
| Muka berdasarkan jumlah sisi | 8{3} |
| Notasi Conway | O aT |
| Simbol Schläfli | {3,4} |
| r{3,3} atau | |
| Konfigurasi muka | V4.4.4 |
| Simbol Wythoff | 4 | 2 3 |
| Diagram Coxeter | |
| Simetri | Oh, BC3, [4,3], (*432) |
| Grup putaran | O, [4,3]+, (432) |
| Referensi | U05, C17, W2 |
| Sifat | beraturan, cembungdeltahedron |
| Sudut dihedral | 109,47122° = arccos(−⅓) |
3.3.3.3 (Bangun titik pojok) |
Kubus (Polihedron dual) |
Jaringan | |

Dalam geometri, oktahedron (atau bidang delapan) adalah sebuah polihedron yang mempunyai delapan buah muka, sisi yang datar. Adapun oktahedron beraturan merupakan sebuah oktahedron yang tersusun atas delapan buah segitiga sama sisi, dan empat buah muka dari oktahedron bertemu di masing-masing titik sudut. Oktahedron beraturan termasuk bangun ruang Platonik. Oktahedron beraturan merupakan polihedron dual dari kubus.
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