Ib icosahedron yog ib txwm muaj polygon. Xws li cov duab geometric muaj 30 sawv, 20 daim duab peb sab ntsej muag thiab 12 qhov xwm kab, uas yog qhov kev sib tshuam ntawm tsib sawv. Nws yog qhov nyuaj heev kom dhos rau ib qho icosahedron los ntawm daim ntawv, tab sis nthuav heev. Nws tuaj yeem ua los ntawm ntawv npau ntawv, qhwv ntawv los yog ntawv dawb lias, ntawv ci. Los ntawm kev siv ntau yam ntaub ntawv, koj tuaj yeem ntxiv qhov cuam tshuam ntau dua thiab zoo nkauj rau koj lub icosahedron.
Nws yog qhov tsim nyog
- - txheej txheej ntawm icosahedron;
- - ntawv;
- - txiab;
- - tus pas ntsuas;
- - PVA kua nplaum.
Cov Lus Qhia
Kauj ruam 1
Luam cov kab ntawv ntawm lub icosahedron rau ntawm ib daim ntawv, tom qab ntawd txiav nws tawm raws kab kab. Qhov no yog qhov tsim nyog thiaj li yuav tso chaw nyob dawb rau gluing qhov chaw ntawm daim duab mus rau txhua lwm yam. Sim txiav cov icosahedron kom qeeb li sai tau, txwv tsis pub, nrog kev hloov me ntsis, koj cov khoom siv tes ua yuav xaus saib tsis zoo. Qhov xav tau rau qhov txiav zoo heev yog vim qhov tseeb tias txhua daim duab peb sab hauv ib qho icosahedron tsis tu ncua muaj ob tog zoo ib yam. Yog li ntawd, yog tias ib sab pib txawv hauv nws qhov ntev, vim li ntawd, xws li qhov tsis sib xws ntawm qhov loj me yuav pom zoo.
Kauj ruam 2
Muab cov icosahedron ua ke raws txoj kab tawv, tom qab ntawd siv cov kua nplaum los lo rau cov chaw uas tau teev los ntawm kab sau ua kab, thiab txuas cov kab txuas uas nyob ib sab ntawm cov duab peb sab kom sib. Rau qhov kho kom nruj, txhua sab glued yuav tsum tau tuav hauv lub xeev no li 20 vib nas this. Tib txoj kev, koj yuav tsum lo kua nplaum tag nrho cov sab nraud ntawm icosahedron. Ob tav kawg yog qhov nyuaj tshaj plaws rau kua nplaum ua ke, vim nws siv lub siab ntev thiab txawj los txuas lawv. Koj daim ntawv icosahedron tau npaj lawm.
Kauj ruam 3
Xws li cov duab geometric tuaj yeem pom hauv lub neej txhua hnub. Piv txwv li, ib lub pob ncaws pob tau ua nyob rau hauv cov duab ntawm ib truncated icosahedron (lub polyhedron muaj 20 hexagons thiab 12 pentagons). Qhov no ua rau pom tau ntau tshaj thaum tus icosahedron ua rau pleev xim dub thiab dawb. Koj tuaj yeem ua lub pob ncaws pob tawm ntawm cov ntawv koj tus kheej, tau yav dhau los luam tawm hauv 2 luam ib daim cheb ntawm icosahedron uas tau txiav.
Kauj ruam 4
Ua cov icosahedron tawm ntawm cov ntawv yog qhov txheej txheem lom zem uas yuav tsum muaj kev ua siab ntev, muaj kev xav thiab muaj ntawv ntau heev. Tab sis qhov txiaj ntsig yuav txaus siab rau lub qhov muag ntev ntev. Daim ntawv icosahedron tuaj yeem muab los ua cov khoom ua si kev kawm rau tus menyuam yaus uas muaj hnub nyoog txog 3 xyoos. Ua si nrog cov duab geometric no, cov menyuam yuav tsim tsis tsuas yog kev txawj nthuav dav thiab kev xav tswv yim, tab sis kuj tau paub lub ntiaj teb ntawm kev ntsuas zoo dua. Rau cov neeg laus, cov txheej txheem muaj tswv yim tsim daim ntawv icosahedron nrog koj tus kheej txhais tes yuav cia koj dhau lub sijhawm, ntxiv rau ua rau cov neeg hlub nrog lub peev xwm los ua cov duab ntsej muag.
