I-tetrahedron iyinombolo elula kunazo zonke ezivela kuma-polygons. Iqukethe ubuso obune, ngasinye esinezinxantathu ezilinganayo, ohlangothini ngalunye oluxhunywe komunye ngobuso obulodwa kuphela. Uma ufunda izakhiwo zalesi sibalo se-geometric ezintathu ukuze siqondile, kungcono ukwenza isibonelo se-tetrahedron sephepha.
Indlela yokufaka i-tetrahedron ephepheni?
Ukwakha tetrahedron elula ephepheni, sidinga:
- iphepha langempela (eliqinile, ungasebenzisa amakhadibhodi);
- i-protractor;
- umbusi;
- isisindo;
- ukunamathisela;
- i-tetrahedron yephepha, umdwebo.
Inkambo yomsebenzi
- Siqala ukusebenza ku-tetrahedron ngokudweba iphepha. Uma isibalo senzelwe kusuka ephepheni elimhlophe, ungadonsela ngqo kulo.
- Sithola umugqa obhekene ne-tetrahedron. Kusukela kumaphethelo amabili, sibeka eceleni izingalo ezingama-60 ⁰, futhi ngamaphuzu atholakalayo, sondela imigqa eqondile aze ahlangane. Sinenxantathu yokulinganisa.
- Okulandelayo ohlangothini ngalunye lwenxantathu esiyakhayo efanayo. Kusukela ekupheleni kokuphela siphinde sihlehlise u-60 ⁰ bese sixhuma. Ngenxa yalokho, kufanele uthole uhlelo oluqukethe ama-triangles amane e-equilateral.
- Ukuze i-reamer ihlangane ndawonye futhi ithole i-tetrahedron, umuntu kufanele enze izibonelelo ezingu-1 cm ezinhlangothini ezintathu zama-triangles ahlukene. Umphumela uba lo mdwebo.
- Sika ukuskena bese usigoba kuyo yonke imigqa, asigobe izibonelelo ngaphakathi, uma kunesidingo, sinqume izingcingo. Sibafaka nge-glue bese siwacindezela ezinhlangothini zangaphakathi kobuso, ujoyine umugqa wezintambo phakathi kolunye uhlangothi kanye nesabelo eceleni koxantathu ongenalutho.
Ezinye izincomo ezengeziwe:
- uma iphepha likhulu kakhulu, khona-ke ezindaweni ezisehlathini, kufanele ubambe into eqinile, isibonelo, ekugcineni kombusi;
- ukuze uthole i-tetrahedron enemibala eminingi, ungapenda ubuso noma ufeze emaphepheni wephepha elimibalabala.
Indlela yokwenza i-tetrahedron ephepheni ngaphandle kokugcoba?
Siyakuthatha isigaba samakhosi lapho utshelwe khona ukuhlanganisa ama-tetrahedron ayisithupha ukusuka ephepheni ukuya kumodemu owodwa usebenzisa inqubo ye-origami.
Sidinga:
- Amabili ama-5 wephepha eliphakathi kwemibala ehlukahlukene;
- izikhali.
Inkambo yomsebenzi
- Ishidi ngalinye lephepha lihlukaniswe izingxenye ezintathu ezilinganayo, uthathe futhi uthole ama-bands afana nesilinganiso esingu-1 kuya ku-3. Ngenxa yalokho, sithola amaqembu angu-30, okuzokwengeza kuwo imodemu.
- Sifaka umdwebo phambi kwethu ubheke phansi, eselulele phezulu. Siphakamisa ngesigamu, siphume futhi siphethe emaphethelweni.
- Ngakwesokunene ngakwesokudla, bhonta ekhoneni ukuze wenze umcibisholo, ukuwuhambisa 2-3 cm kusuka enqenqemeni.
- Ngokufanayo, bhonta ikhoneni lesobunxele (isithombe njengephepha ukwenza i-tetrahedron 3).
- Siphonsa ikhoneni elingenhla eliphezulu lexantathu encane, okwaba ngumphumela wokusebenza kwangaphambilini. Ngakho-ke, izinhlangothi zomngcele oboshiwe zizoba ngecala elifanayo.
- Nweba umkhombandlela oholela.
- Nweba ikhoneni elingakwesokunxele nasemigqeni ekhona kakade ekhona bese ugoqa ngaphakathi kwekhoneni njengoba kuboniswe esithombeni.
- Ekhoneni elingakwesokudla, bhonsa phezulu ekugcineni phansi ukuze uhambisane ne-fold folded during operation # 3.
- Ingqimba yangaphandle ihlanganiswe futhi ngakwesokudla besebenzisa ipolisi eyenziwe njengomphumela wokusebenza inombolo ye-3.
- Imisebenzi yangaphambilini iphindaphindiwe kusukela komunye umkhawulo wesigcawu, kodwa ukuze ama-small creases avele emaphethelweni afanayo emgqeni.
- Umhluku obangelwayo uhlolwe ngesigamu ubude bese uvumele ukuthi ungathuli ukuzitholela ngokuzenzekelayo. I-angle ngqo yokudalulwa kuzocaca kamuva, lapho imodeli ekugcineni ihlangene. Isici silungile, manje senza okungaphezulu okungu-29 ngendlela efanayo.
- Isixhumanisi siphenduliwe ukuze phakathi nomhlangano walo uhlangothi lwawo lwangaphandle lubonakale. Sixhuma izixhumanisi ezimbili ngokufaka ithebhu ephaketheni elenziwe nge-angle encane yangaphakathi.
- Izixhumanisi ezihlangene kumele zenze i-angi 60 ⁰, ngaphansi kwazo ezinye izixhumanisi ezizojoyina (isithombe njengokwenza iphepha tetrahedron 13).
- Sengeza isixhumanisi sesithathu kwesibili, nesixhumanisi sesibili kuya kokuqala. Ukuphela kwesibalo kutholakala, phezulu lapho zonke izixhumanisi zayo zixhunyiwe.
- Ngokufanayo, engeza izixhumanisi ezintathu. I-tetrahedron yokuqala ikulungele.
- Ama-angles wesibalo esiphelile angase ahambisane ncamashi, ngakho-ke, kufanele uhambe uvula ama-angles angama-tetrahedra.
- Phakathi kwazo izietrahedroni kufanele zixhunywe ukuze i-angle yeyodwa idlule emgodini kwenye.
- Amatrahedra amathathu axhunyiwe ndawonye.
- I-tetrahedra ezine ihlanganiswe ndawonye.
- Umthamo wama-tetrahedron amahlanu ulungele.
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Uma uhlangabezane ne-tetrahedron, ungaqhubeka futhi wenze i- prism , i- icosahedron , i- parallelepiped nezinye izibalo ze-geometric kusuka ephepheni .