Kulolu shicilelo, sizocubungula incazelo, izakhi, izinhlobo kanye nezakhiwo eziyinhloko ze-parallelepiped, kuhl. unxande. Ulwazi olwethulwe luhambisana nemidwebo ebonakalayo ukuze ubone kangcono.
Incazelo yebhokisi
I-Parallelepiped isithombe sejometri esikhaleni; ihexagon ubuso bayo bungamapharalelogramu. Isibalo sinemiphetho eyi-12 nobuso obuyisi-6.
I-parallelepiped izinhlobonhlobo ezine-paralelogram njengezisekelo. Izakhi eziyinhloko zesibalo zifana nalezo ze-prism.
Qaphela: Amafomula okubala (esithombe esingunxande) kanye ne-paralelepiped ethulwa ezincwadini ezihlukene.
Izinhlobo zama-paralelepipeds
- I-paralelepiped eqondile - ubuso obuhlangothini besibalo bu-perpendicular ezisekelweni zaso futhi buyi-rectangles.
- A parallelepiped kwesokudla kungaba unxande Izisekelo zingonxande.
- I-Oblique parallelepiped – ubuso obuseceleni abukho perpendicular to the bases.
- – zonke izinhlangothi zomfanekiso ziyizikwele ezilinganayo.
- Uma bonke ubuso be-paralelepiped bufana nama-rhombuse, kubizwa ngokuthi phindokuhle.
Izakhiwo zebhokisi
1. Ubuso obuphambene be-paralelepiped buyahambisana futhi bungamapharalelogramu alinganayo.
2. Wonke ama-diagonal we-paralelepiped ahlangana endaweni eyodwa futhi ahlukaniswe ngesigamu kuwo.
3. I-diagonal yesikwele (D) ye-parallelelepiped engunxande ilingana nesamba sezikwele zobukhulu bayo obuthathu: ubude (A), ububanzi (B) nokuphakama (C).
d2 =A2 + b2 +c2
Qaphela: ku-parallelelepiped, sebenza futhi.