Pehea e hoʻomaulia i ka buke o ke pyramid?

Ka hua'ōlelo "pyramid" involuntarily pili i na kanaka nunui kilohana i loko oʻAigupita, pono ho'āhu koena o na Paraʻo. Paha ia mea ke kumu o ka pyramid like me ka geometric huahelu pololei aʻo a pau, i nā keiki.

Aka hoi, e ka ho'āʻo e haawi aku ia i ka geometric ho'ākāka 'ana. Manao wale no kekahi pelane he mau heluʻai (A1, A2, ..., An) a me kekahi i kekahi (E),ʻaʻole prinadlezhayshuyu ia. No laila, inā i ka wahi E (luna) ua pili i vertices o ka iieeaii i hanaʻia e nā kumu A1, A2, ..., A (kumu), e kiʻi i kekahi polyhedron, a ua kapaia ka pyramid. ʻae nō hoʻi, ma ka iieeaii vertices i loko o ke kumu o ka pyramid hiki e kekahi helu, a me ke kaumaha ma muli o ko lākou helu i ke kapa i ka triangular pyramid a me ka quadrangular, pentagonal, etc.

Inā 'oe e nānā pono i ka pyramid, e lilo ia i hoike kumu ka mea, ua i ho'ākāka' ia i loko o kaʻokoʻa ala - like me ka geometric kinona ka i ke kumu o ka iieeaii, a like me kaʻaoʻao maka - triangle mauna, hui ma kekahi, he pono ole apex.

E like me ka pyramid - dimensional huahelu, alaila, he ia he laupaʻi ano like me ka buke. Ka buke o ka pyramid ua Me ma ka luawai ike haʻilula no ka buke like i ka hapakolu huahana kumu o ka pyramid ma luna o kona kiekie:

Ka buke o ka pyramid i loko o ka derivation o initially ana no ka triangle, ma muli o ka ikaika pili ma waena o ka nui o ka buke o ke triangular prism nei ke ao hookahi waihona ipu a me ke kiekie, a, e like me ka mea huli mai, ekolu manawa i kēia dala.

A mahope mai o kekahi, mai hemo mai i loko o ka triangular pyramid, a me kona leo mea kuokoa o ka holo hooiaio? Ieoaeunoaa iauaeoia legitimacy ka leo ma luna o haʻilula - ua maopopo.

ka mea pololei wale i waena o nā mea a pau o nā pyramids i, ka mea ma ke kumu o he mau iieeaii. Like no ke kiekie o ka pyramid , ka mea pono e " 'ōlelo" ma ka waena konu o ka waihona ipu.

Ma ka hihia o ka ole iieeaii i loko o ka waihona ipu no ka helu ana i ka waihona ipu āpana koi 'ia:

• mahele ia i loko o triangle mauna a me mika pāhoʻonui lua;

• compute i ka wahi o kela mea keia mea o lakou;

• hoʻohui i nā ikepili.

Ma ka hihia o ka maʻamau iieeaii ma ke kumu o ka pyramid, kona wahi he pōpilikia mai ka ahaaina haʻilula, no laila, na ka leo o ka papa pyramid he pōpilikia nui wale.

No ka laʻana, e hoʻomaulia i ka buke o ka quadrangular pyramid, ina ia mea pololei, e kukulu mua loa o kaʻaoʻao'ākau quadrangle (huinahalike) i loko o ka lalo o ka huinahalike, a ma ka hoonui i ke kiekie o ka pyramid ua maheleia i ekolu huahana loaa.

Ka buke o ka pyramid hiki e pōpilikia hoʻohana 'ē aʻe kiko'î:

• me ke kolu huahana o ka poepoe o ka kahahńnai kākauʻia i loko o ka pyramid ma luna o kona piha ili āpana;

• elua hapakolu o ka huina hoonui o ka mamao ma waena o nā ana ia skew parallelogram kihi a me surfaces a nāna i hana i ka waena o ka i koe eha lua penei.

Ka buke o ka pyramid he pōpilikia wale i loko o ka hihia ia kona kiekie o ka like me ka kekahi o kaʻaoʻao kihi, oa ma ka hihia o kekahi mau huinahń pyramid.

Olelo ana e pili ana i na pyramids, ua hiki ole kāpae'ōlelo i ka truncated pyramid loaa i ka pauku laua i ke kumu pelane o ka pyramid. Lākou ka leo 'ano like me ke koena unuhi o ka a pau ka leo o ka pyramid a me ka truncated vertices.

Ka mua ka leo o ka pyramid, aole nae i pau loa i loko o kona keia ano, nae, like me 1/3 o ka buke o ka ike prism loaʻa Democritus. Kona hana o ka helu Archimedes i kapaia "i hoike", i Democritus hiki i ka pyramid, e like me ke aka, i ua haku o infinitely lahilahi, e like papa.

Ma ka ninau o loaa i ka buke o ka pyramid "huli" a me ka maʻi lele hōʻailona helu, ka hoʻohana 'ana i nā wahi o kona vertices. Pyramid kūkulu i lunaʻekolu vectors kekahi, e, pela aku, ua like pu no kekahi-ono o ka modulus o ka hui huina hoonui o ka hoʻoholo ma mua vectors.