Yuav ua li cas ua ib tug dodecahedron: tswv yim tswv yim

Peb yog feem ntau nyob rau hauv lub tsev kawm ntawv nyob rau hauv lej hoob kawm, thiab tshwj xeeb tshaj yog Geometry, twb yuam kom geometric duab. Qhov no yog tsim nyog ua ntej ntawm tag nrho cov thiaj li pom tseeb ntawm qhov teeb meem ntawm qhov teeb meem thiab ces sim daws tau los ntawm ib txoj kev zoo. Kev ua haujlwm zoo li no yog qhov tseem ceeb heev, vim tias tus menyuam tsis yog kawm paub yuav ua li cas los ua tus dodecahedron, tabsis nws kuj paub tias muaj pes tsawg tus sab nraud thiab nws qhov chaw nyob hauv qee qhov xwm txheej. Tag nrho cov lus qhia no tseem ceeb thiab tsim nyog rau koj tus me nyuam. Tias yog vim li cas hnub no peb xav kom koj ua ib tug dodecahedron ntawm daim ntawv.

Koj tuaj yeem ua rau daim duab geometric nrog koj tus menyuam. Qhov no yuav txawm yog ib txoj hauv kev zoo tshaj qhov muab rau ib qho khoom ua tau npaj txhij, vim hais tias nyob hauv tus txheej txheem ntawm kev sib koom ua ke tus me nyuam yuav kawm ua ke yuav ua li cas los ua cov nuj nqis thiab ua tiag tiag ntawm lawv tus kheej. Cov kev sib koom tes zoo li no kuj tseem ceeb rau txoj kev siv tes taw, kev ua siab ntev thiab kev ua siab ntev, txij li yog hais tias nws tsis yog los ua kom tsawg kawg yog ib qho ntawm lub ntsiab ntawm dodecahedron, nws yuav tsis tuaj yeem tuaj yeem ua ke. Yog vim li cas peb thiaj li qhia rau koj kom koj tus me nyuam ib txoj kev yuav ua li cas thiaj ua tau ib qho kev sib koom tes ua ke nrog thiab yooj yim.

Ua ntej piav qhia meej tias qhov no yog qhov tseeb. Lub dodecahedron yog muaj peb sab (polyhedron) muaj kaum ob lub dav hlau. Ntawd yog, nyob rau hauv lwm yam lus, nws yog dodecahedron, uas nyob rau hauv qhov chaw nthuav loj me me thiab sawv cev raws nraim li cas peb yuav sai sai nrog koj. Txij li thaum lub dodecahedron yog cov duab cim ntau ntawm cov duab ntsuas (zoo, los yog ib yam ntawm cov symmetrical feem ntau), nws yog feem ntau pom hauv kev kawm geometry hauv tsev kawm ntawv kom tus xibfwb tuaj yeem piav meej meej rau cov menyuam lub ntsiab lus ntawm txoj haujlwm.

Yog tias koj tau xav tias yuav ua li cas ua tus dodecahedron rau koj tus me nyuam, peb xav hais tias koj nyeem cov chav kawm tom ntej ntawm kev yuav ua li cas. Lub sijhawm nws yuav siv sij hawm me ntsis, tab sis cov txiaj ntsig ntawm qhov khoom ua si txawv txawv yuav yog lub hiav txwv. Yog li, nqa cov ntaub ntawv tseem ceeb hauv qab no: txiab, cwj mem, pleev, pas ntsuas, kua nplaum thiab, ntawm nplooj ntawv. Koj txiav txim siab uas dodecahedron koj xav ua: xim lossis xim dub thiab dawb. Qhov tseem ceeb tshaj plaws yog tsis tov tag nrho cov khoom faib kom cov khoom ua si yog zoo meej tiaj. Yog vim li cas peb xav tau ib tus pas ntsuas thiab ib lub lag luam.

Tom qab tag nrho cov ntaub ntawv tsim nyog tau txais, peb qhia txog cov txheej txheem ntawm yuav ua li cas ua ib qho ntawv dodecahedron.

Yuav pib, kos ib kev pentagon nrog ib tug kav. Koj xaiv qhov loj koj tus kheej, tab sis xav tias qhov loj dua cov duab, qhov yooj yim nws yuav ua rau nws ua ke. Nws yog los ntawm tej lub ntsiab lus uas nws yog preferable los ua ib tug loj lub cev.

Tom qab cov duab kos tawm, muab nws ua "cheb," uas yog, duab los ntawm ntau lub dav hlau. Hauv kev txiav txim siab rau txhua txoj kev dav hlau kom sib haum, sib tw me me rau txhua qhov ntawm lawv. Nws yog rau lawv tias peb yuav thov kua nplaum.

Tom ntej, peb txiav tawm peb cov duab, khoov cov npoo thiab pib sau rau hauv ib "lub voos xwmfab". Cov lus qhia yooj yim heev, tsuas yog qhov tseeb.

Lub dodecahedron, raws li peb tau piav saum toj no, yog npaj txhij txhua. Cia nws mus qhuav, thiab koj tuaj yeem thov koj tus menyuam.