He aha ka pyramid maʻamau: wehewehe, ʻano, waiwai

Ma kēia hoʻolaha, e noʻonoʻo mākou i ka wehewehe, nā ʻano (triangular, quadrangular, hexagonal) a me nā waiwai nui o kahi pyramid maʻamau. Hoʻopili ʻia ka ʻike i hōʻike ʻia me nā kiʻi kiʻi no ka ʻike maikaʻi.

Wehewehe o ka pyramid maʻamau

Piramida mau - ʻo kēia, ʻo ke kumu he polygon maʻamau, a ʻo ka luna o ke kiʻi i kuhi ʻia i waenakonu o kona kumu.

ʻO nā ʻano maʻamau o nā pyramids maʻamau he triangular, quadrangular a me hexagonal. E noʻonoʻo kākou iā lākou i nā kikoʻī hou aku.

Nā ʻano pyramid maʻamau

Piramida huikolu mau

• Ke kumu – huinakolu ʻākau / ʻālike ʻAmelisa.
• ʻO nā ʻaoʻao ʻaoʻao he mau huinakolu isosceles like. ADC, BDC и ADB.
• Pāku'i nā piko D ma ke kumu - lae O, 'o ia ka huina o na ki'eki'e/medians/bisectors o ka huinakolu ABC.
• DO ʻo ke kiʻekiʻe o ka pyramid.
• DL и DM - apothemes, ʻo ia hoʻi nā kiʻekiʻe o nā alo ʻaoʻao (isosceles triangles). ʻEkolu ka huina (hoʻokahi no kēlā me kēia maka), akā ʻo ke kiʻi ma luna e hōʻike ana i ʻelua i ʻole e hoʻonui.
• ⦟DAM = ⦟ DBL = a (nā kihi ma waena o nā iwi ʻaoʻao a me ke kumu).
• ⦟DLB = ⦟DMA = b (nā kihi ma waena o nā alo ʻaoʻao a me ka mokulele kumu).
• No ia pyramid, ʻoiaʻiʻo ka pilina ma lalo nei:

  AO:OM = 2:1 or BO:OL = 2:1.

'Ōlelo Aʻo: inā like nā ʻaoʻao a pau i ka pyramid triangular maʻamau, ua kapa ʻia ʻo ia pololei .

Piramid quadrangular mau

• He quadrilateral mau ke kumu ABCD, ʻo ia hoʻi, he huinahā.
• ʻO nā ʻaoʻao ʻaoʻao he mau huinakolu isosceles like: Nā Kūlana Kūʻai Kūʻai, ʻO BEC, CED и AED.
• Pāku'i mau piko E ma ke kumu - lae O, ka huina hui o na diagonal o ka huinahalike ABCD.
• EO - ke kiʻekiʻe o ke kiʻi.
• EN и EM - apothemes (he 4 ka huina, elua wale no i hoikeia ma ke kii ma ke ano laana).
• Hōʻike ʻia nā kihi like ma waena o nā ʻaoʻao ʻaoʻao a me ke kumu e nā leka pili (a и b).

Piramid hexagonal mau

• ʻO ke kumu he hexagon maʻamau ABCDEF.
• ʻO nā ʻaoʻao ʻaoʻao he mau huinakolu isosceles like: AGB, BGC, CGD, DGE, EGF и FGA.
• Pāku'i uka G ma ke kumu - lae O, 'o ia ke kiko hui o na diagonal/bisectors o ka hexagon ABCDEF.
• GO ʻo ke kiʻekiʻe o ka pyramid.
• GN - apothema (eono ka huina).

Nā waiwai o kahi pyramid maʻamau

1. Ua like nā ʻaoʻao a pau o ke kiʻi. ʻO ia hoʻi, ua like ka lōʻihi o ka piko o ka pyramid mai nā kihi a pau o kona kumu.
2. Ua like ka huina ma waena o nā ʻaoʻao ʻaoʻao a me ke kumu.
3. Kūlike nā maka a pau i ke kumu ma ka huina hoʻokahi.
4. Ua like nā ʻāpana o nā ʻaoʻao āpau.
5. Ua like nā apothems a pau.
6. Hiki ke wehewehe ʻia a puni ka pyramid, ʻo ia ke kikowaena o ke kikowaena o nā perpendiculars i huki ʻia i nā kiko waena o nā ʻaoʻao ʻaoʻao.
7. Hiki ke kahakaha ʻia kahi pōʻai i loko o kahi pyramid, ʻo ke kikowaena o ia mea ke kikowaena o nā bisectors, mai nā kihi ma waena o nā ʻaoʻao ʻaoʻao a me ke kumu o ke kiʻi.

'Ōlelo Aʻo: Hōʻike ʻia nā ʻōkuhi no ka loaʻa ʻana, a me nā pyramids i nā puke ʻokoʻa.