Icosahedron yog ib lub polyhedron (3-D duab nrog tiaj tus) uas muaj 20 ntsej muag, lossis tiaj tus. Nws muaj 12 vertices (cov ces kaum) thiab 30 npoo, thiab 20 lub ntsej muag ntawm icosahedron yog cov duab peb sab sib npaug.
Tus zoo li 20 lub ntsej muag hu li cas?
In geometry, an icosahedron (/ˌaɪkɒsəˈhiːdrən, -kə-, -koʊ-/ or /aɪˌkɒsəˈhiːdrən/) yog polyhedron nrog 20 lub ntsej muag. … Qhov paub zoo tshaj plaws yog (convex, non-stellated) tsis tu ncua icosahedron-ib qho ntawm Platonic solids-uas lub ntsej muag yog 20 daim duab peb sab sib npaug.
Icosahedron hauv geometry yog dab tsi?
Hauv geometry, ib txwm icosahedron (/ˌaɪkɒsəˈhiːdrən, -kə-, -koʊ-/ los yog /aɪˌkɒsəˈhiːdrən/) yog a convex polyhedron nrog 20 lub ntsej muag,20vertical. Nws yog ib qho ntawm tsib Platonic solids, thiab ib qho uas muaj ntsej muag tshaj plaws. … Cov plural tuaj yeem yog "icosahedrons" lossis "icosahedra" (/-drə/).
Icosahedron cim dab tsi?
Icosahedron. Lub Icosahedron yog lub thib tsib thiab zaum kawg platonic khoom muaj 20 daim duab peb sab sab thiab cim rau lub caij ntawm dej. Lub ntsiab lus: kev tso siab rau kev txawj ntse ntawm lub ntiaj teb yog xav tau nrog kev txaus siab tso cai rau lwm tus los pab hauv qhov xwm txheej tiv thaiv kev ua haujlwm.
Icosahedron puas yog prism?
Hauv geometry, lub icosahedral prism truncated yog a convex uniform polychoron (plaub-dimensional polytope). Nws yog ib qho ntawm 18 convex uniform polyhedral prisms tsim los ntawm kev siv niaj hnubprisms los txuas cov khub ntawm Platonic cov khib nyiab lossis Archimedean cov khib nyiab nyob rau hauv parallel hyperplanes.
