Ma kēia hoʻolaha, e noʻonoʻo mākou i ka wehewehe, nā mea nui, nā ʻano a me nā koho kūpono no ka ʻāpana o ka pyramid. Hoʻopili ʻia ka ʻike i hōʻike ʻia me nā kiʻi kiʻi no ka ʻike maikaʻi.
Wehewehe Pyramid
'O ka Pyramid he kiʻi geometric ma ke ākea; he polyhedron i loaʻa i kahi kumu a me nā ʻaoʻao ʻaoʻao (me ka vertex maʻamau), ʻo ka helu o ia mea e pili ana i ka helu o nā kihi o ke kumu.
'Ōlelo Aʻo: ʻO ka pyramid kahi hihia kūikawā.
nā mea pyramid
No ke kiʻi ma luna:
- Kumu (quadrangle ABCD) – he helehelena o ke kii he polyhedron. ʻAʻole nona ka luna.
- ʻO ka luna o ka pyramid (wahi E) ʻo ke kiko maʻamau o nā alo ʻaoʻao a pau.
- Nā alo ʻaoʻao he huinakolu e hui ana ma ka piko. I kā mākou hihia, penei: Nā Kūlana Kūʻai Kūʻai, AED, ʻO BEC и CED.
- ʻaoʻao iwi ʻaoʻao - nā ʻaoʻao o ka ʻaoʻao i ke alo, koe naʻe nā mea pili i ke kumu. ʻO kēlā mau. ʻo kēia AE, BE, CE и DE.
- Pyramid Kiʻekiʻe (EF or h) – hāʻule kahi kū pololei mai luna o ka pyramid a i kona kumu.
- ʻO ke kiʻekiʻe o ka ʻaoʻao (EM) – ke kiʻekiʻe o ka huinakolu, ʻo ia ka ʻaoʻao o ke kiʻi. Ma kahi pyramid maʻamau i kapa ʻia apothematic.
- Ka ʻili o ka pyramid ʻo ia ka ʻāpana o ke kumu a me kona mau ʻaoʻao āpau. Hōʻike ʻia nā ʻōkuhi no ka loaʻa ʻana (ke kiʻi pololei), a me nā pyramids, i nā puke ʻokoʻa.
Ka hoʻomohala ʻana o ka pyramid - ke kiʻi i loaʻa ma ka "ʻokiʻoki" i ka pyramid, ʻo ia hoʻi ke hoʻolike ʻia kona mau maka a pau i ka mokulele o kekahi o lākou. No kahi pyramid quadrangular maʻamau, ʻo ka hoʻomohala ʻana i ka mokulele o ke kumu penei.
'Ōlelo Aʻo: hōʻike ʻia ma kahi puke ʻokoʻa.
Nā manaʻo ʻāpana o ka pyramid
1. Māhele diagonal – hele ka mokulele ʻoki ma luna o ke kiʻi a me ka diagonal o ke kumu. ʻElua mau ʻāpana o ka pyramid quadrangular (hoʻokahi no kēlā me kēia diagonal):
2. Ina ua like ka papale oki me ke kumu o ka pyramid, e mahele ia i elua kii: he pyramid like (helu mai luna) a me ka pyramid i okiia (helu mai ke kumu). ʻO ka ʻāpana he polygon e like me ke kumu.
Ma kēia kiʻi:
- nā pyramid EABCD и EA1B1C1D1 like;
- quadrangles ABCD и A1B1C1D1 ua like no hoi.
'Ōlelo Aʻo: Aia nā ʻano ʻoki ʻē aʻe, akā ʻaʻole maʻamau.
Nā ʻano pyramid
- Piramida mau - ʻo ke kumu o ke kiʻi he polygon maʻamau, a ua kuhi ʻia kona vertex i ke kikowaena o ke kumu. Hiki iā ia ke triangular, quadrangular (kiʻi ʻia ma lalo), pentagonal, hexagonal, etc.
- Pyramid me ka ʻaoʻao ʻaoʻao e kū pono ana i ke kumu - aia kekahi o nā ʻaoʻao ʻaoʻao o ke kiʻi ma kahi kihi ʻākau i ka mokulele o ke kumu. I kēia hihia, ʻo kēia kaʻe ke kiʻekiʻe o ka pyramid.
- Piramida ʻoki ʻia - ka ʻāpana o ka pyramid e waiho ana ma waena o kona kumu a me kahi mokulele ʻoki e like me kēia kumu.
- Teretadona – He pyramid huinakolu keia, he 4 huinakolu kona mau helehelena, hiki ke lawe ia i kumu. ʻO pololei (e like me ke kiʻi ma lalo) – inā like nā ʻaoʻao a pau, ʻo ia hoʻi, he mau huinakolu kaulike nā ʻaoʻao a pau.
