Video: Dab tsi yog 8 lub ntsej muag ntawm octahedron?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv geometry, ib qho octahedron (plural: octahedra) yog a polyhedron nrog yim lub ntsej muag, kaum ob ntug, thiab rau qhov ntsug. Lo lus feem ntau yog siv los xa mus rau octahedron li niaj zaus, Platonic khoom muaj li yim. daim duab peb sab sib npaug , plaub qhov sib ntsib ntawm txhua qhov vertex.
Raws li txoj cai, lub ntsej muag nrog 8 lub ntsej muag hu ua dab tsi?
Nyob rau hauv geometry, lub hexagonal prism yog ib tug prism nrog hexagonal puag. Qhov no polyhedron muaj 8 fej , 18 edges, thiab 12 vertices. Txij li nws muaj 8 fas , nws yog octahedron. Txawm li cas los xij, lo lus octahedron feem ntau yog siv los xa mus rau octahedron li niaj zaus, uas muaj yim daim duab peb sab. ntsej muag.
Ib tug kuj yuav nug, dab tsi yog cov khoom ntawm octahedron? Octahedron yog ib lub polyhedron tsis tu ncua nrog yim lub ntsej muag. Los ntawm kev tsis tu ncua yog txhais tau tias txhua lub ntsej muag yog tib yam li niaj zaus polygons (sib npaug sib npaug rau octahedron ). Nws yog ib qho ntawm tsib platonic solids (lwm tus yog tetrahedron, lub voos xwmfab, dodecahedron thiab icosahedron). Nws muaj 8 lub ntsej muag, 12 ntug thiab 6 ntsug.
Hais txog qhov no, lub ntsej muag ntawm dodecahedron yog dab tsi?
pentagonal
Puas yog octahedron muaj lub ntsej muag sib luag?
Octahedron . Los ntawm Greek, yim- ntsib los yog yim sab, lub octahedron yog yim equilateral daim duab peb sab koom nrog 12 npoo los ua rau vertices los yog fab. Cov duab muaj plaub khub ntawm cov ntsej muag sib npaug.
Pom zoo:
Saturn lub ntsej muag yog dab tsi?
Cov qauv thiab Surface Saturn yog cov roj loj zoo li Jupiter. Nws feem ntau yog ua los ntawm hydrogen thiab helium. Saturn muaj huab cua tuab. Saturn muaj qhov zoo nkauj ntawm xya lub ntsiab nplhaib nrog qhov chaw nruab nrab ntawm lawv
Lub ntsej muag zoo li cas muaj 5 lub ntsej muag?
Hauv geometry, pentahedron (plural: pentahedra) yog polyhedron nrog tsib lub ntsej muag lossis sab. Tsis muaj lub ntsej muag-transitive polyhedra nrog tsib sab thiab muaj ob hom topological txawv. Nrog lub ntsej muag polygon tsis tu ncua, ob daim ntawv topological yog cov square pyramid thiab triangular prism
Dab tsi yog qhov flux los ntawm ib lub ntsej muag ntawm lub voos xwmfab?
Teb thiab piav qhia: Cov hluav taws xob flux los ntawm ib sab ntawm ib lub voos xwmfab vim yog tus nqi taw tes yog & rho tawm; 32000 V ⋅ m − 32 000 V ⋅ m
Lub ntsej muag yog dab tsi?
Nyob rau hauv cov khoom geometry, lub ntsej muag yog lub tiaj tus (planar) nto uas tsim ib feem ntawm tus ciam teb ntawm cov khoom khoom; ib tug peb-dimensional khoom bounded tshwj xeeb los ntawm lub ntsej muag yog ib tug polyhedron
Koj pom thaj tsam ntawm lub ntsej muag siv lub ntsej muag li cas?
Qhov chaw saum npoo yog qhov sib npaug ntawm thaj chaw ntawm txhua lub ntsej muag (lossis qhov chaw) ntawm 3D duab. Ib lub cuboid muaj 6 lub ntsej muag. Txhawm rau nrhiav thaj chaw saum npoo ntawm lub cuboid, ntxiv cov cheeb tsam ntawm tag nrho 6 lub ntsej muag. Peb tseem tuaj yeem sau qhov ntev (l), dav (w), thiab qhov siab (h) ntawm lub prism thiab siv cov qauv, SA = 2lw + 2lh + 2hw, txhawm rau nrhiav thaj chaw saum npoo