I-Tetrahedron yinto elula kwiipolgoni. Iqukethe ubuso obune, ngasinye sinoxantathu olinganayo, kwicala ngalinye lixhunyelelana nelinye ngobuso obunye kuphela. Xa ufunda iipropati zeli geometri yesithathu ye-geometric ukucacisa, kukulungele ukwenza umzekelo wephepha le-tetrahedron.
Ungabamba njani i-tetrahedron ephepheni?
Ukwakha iTetrahedron elula ephepheni, kufuneka:
- iphepha langempela (likhulu, ungasebenzisa amakhadibhodi);
- umqhubi;
- umlawuli;
- izikiti;
- ukubambelela;
- itetrahedron yephepha, umzobo.
Inkqubo yomsebenzi
- Siqala umsebenzi kwi-tetrahedron ngokukrazula iphepha. Ukuba isibalo sicwangcisiwe ukusuka kwiphepha elilula, unokwenza ngokukhawuleza kuyo.
- Senza umgca onobuso beetrahedron. Ukususela kwimiphetho emibili, sibeka eceleni iingcingo ze-60 ⁰, kwaye ngeendlela ezifunyenweyo, sondela imigca echanekileyo de idibanise. Sinomnxantathu olinganayo.
- Emva koko kwicala ngalinye lexantathu sakha enye. Ukususela ekupheleni ngamnye siphinde sishiye 60 ⁰ kwaye sidibanise. Ngenxa yoko, kufuneka ufumane iskimu esinee-triangles ezine ezilinganayo.
- Ukuze i-reamer ihlanganiswe kunye kunye nokufumana i-tetrahedron, umntu makenze izibonelelo ezi-1 cm kumacala amathathu eonxantathu ezahlukeneyo. Umphumo ngulo mzobo.
- Cima iskripthi uze uyiguqule kuyo yonke imigca, asihlabe izibilini ngaphakathi, ukuba kunyanzelekile, sinqumle iikona. Siyazibamba ngeglue uze uzifakelele kumacala angaphakathi ebusweni, ujoyine umgca wecala phakathi kwecala kunye nesibonelelo kwicala lexantathu engenanto.
Ezinye iingcebiso ezongezelelweyo:
- ukuba iphepha likhulu kakhulu, ngoko kwiindawo zeengxowa, kufuneka ubambe into eqinile, umzekelo, umda womlawuli;
- Ukuze ufumane i-tetrahedron eneembala ezininzi, unokuyipenda ubuso okanye uphume kwiphepha lephepha elinemibala.
Indlela yokwenza i-tetrahedron ephepheni ngaphandle kwe-gluing?
Siyakukunika ingqalelo kwiklasi yeklasi apho ichazwa ukuba ihlanganiswe njani i-tetrahedron ezi-6 ukusuka ephepheni ibe yimodyuli enye usebenzisa ubugcisa bokuqala.
Sidinga:
- Iibini ezi-5 zamaphepha ezigca zephepha lemibala eyahlukileyo;
- izikhali.
Inkqubo yomsebenzi
- Icandelo ngalinye lephepha lihlukaniswe zibe ziingxenye ezintathu ezilinganayo, zinqumle kwaye zithathe iimbopheko ezinomlinganiselo we-1 ukuya kwi-3. Ngenxa yoko, sithola amaqela angama-30, apho esiya kufakamo khona imodyuli.
- Sifaka umgca phambi kwethu sijongene phantsi, silula. Siyifake kwisiqingatha, siveze size sigobe phakathi komda.
- Kwiphepha elingakwesokudla, phonona ikhoneni ukwenzela ukuba wenze i-arrow, ukuyihambisa 2-3 cm ukusuka kumgca.
- Ngokufanayo, bhinqa ikhoneni elingasekhohlo (ifoto njengephepha ukwenza i-tetrahedron 3).
- Siphonsa ikhoneni eliphezulu lexantathu elincinci, eliye laphumela njengesiphumo sokusebenza kwangaphambili. Ngaloo ndlela, amacala omgca ogqityiweyo uya kuba ngekona efanayo.
- Ukwandisa i-fold fold.
- Ukwandisa ikhoneni elingakwesokunxele kunye nakwii-fold folds ezikhoyo ezikhoyo zifake kwikhoneni ngaphakathi ngaphakathi njengoko kuboniswe kwisithombe.
- Ekhoneni lokunene, bhonqa umgca ophezulu ukuya ngaphantsi ukwenzela ukuba unqamle kunye nefayile eyenziwe ngexesha lomsebenzi # 3.
- Umgca ongaphandle uhlanganiswe kwakhona ngasekunene usebenzisa ipolisi eyenziwe njengesiphumo somsebenzi wenombolo 3.
- Imisebenzi yangaphambili iphindaphindiwe ukusuka komnye umphetho womqhawulo, kodwa ke ukuba iincinci ezincinci zivele kwiiphelo ezifanayo.
- Umqhamo obangelwayo ugosiwe kwisiqingatha kunye nobude kwaye uvumele ukuba uthele utyhile ngokukhawuleza. I-angle ecacileyo yokuchazwa iya kucaca kamva, xa umzekelo uhlanganiswe. Isici silungile, ngoku senza okungaphezulu kwe-29 ngendlela efanayo.
- Ikhonkco iyanqanyulwa ukwenzela ukuba ngexesha lebandla lalo langaphandle libonakala. Sidibanisa iibhanki ezimbini ngokufaka ifayile kwisipokothwa esenziwe ngehora elincinci langaphakathi.
- Izixhumanisi ezihlangeneyo kufuneka zenze i-angle ye-60 ⁰, phantsi kwazo ezinye iinqonkqo ziza kujoyina (ifoto njengokwenza iphepha le-tetrahedron 13).
- Songeza isiqhagamshelo sesithathu kwisibini, kunye nesibini isiqhagamshelo ukuya kuqala. Ukuphela kwesibalo kufumaneka, phezulu apho zonke iinqhagamshelo zayo zixhunyiwe.
- Ngokufanayo, faka ezinye izixhumanisi ezintathu. I-tetrahedron yokuqala ikulungele.
- Amacangca omfanekiso ogqityiweyo akanako ukufana okufanayo, ngoko kulungelelwano oluchanekileyo, umntu kufuneka ahambe evule iingalo zomntu ngamnye weetrahedra ezalandelayo.
- Phakathi kwabo ietrahedron kufuneka zidibaniswe ukwenzela ukuba igosa linye lidlule emhadeni kwenye.
- Iitrahedra ezintathu zidibene kunye.
- Iitrahedra ezine zidibene kunye.
- Imodyuli yeetrahedron ezintlanu ikulungele.
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Ukuba ujamelene ne-tetrahedron, unokuqhubeka kwaye wenze i- prism , i- icosahedron , i- parallelepiped kunye namanye amanani ejometri kwiphepha .