Video: Dab tsi 3d duab muaj 4 vertices thiab 6 ntug?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov tsawg tshaj plaws polyhedron yog tetrahedron nrog 4 daim duab peb sab ntsej muag , 6 ntug , thiab 4 axub.
Ib sab ntawm qhov no, dab tsi 3d khoom muaj 4 npoo ntau dua li vertices?
Lub kub muaj 8 ntsug , 12 ntug thiab 6 fim. Nyob rau hauv dav dav rau cov khoom khib nyiab cov hauv qab no yeej ib txwm muaj tseeb: # ntsug - # ntug + #faces = 2. Hauv lub voos xwmfab koj yuav pom qhov no muab 8 - 12 + 6 = 2.
Ib sab saum toj, dab tsi 3d duab muaj 4 sab? tetrahedron
Ib yam li ntawd, muaj pes tsawg lub ntsej muag polyhedron muaj 4 vertices thiab 6 npoo?
TetrahedronA tetrahedron yog ib qho duab nrog lub hauv paus peb sab thiab sab, kuj tau piav qhia raws li daim duab peb sab pyramid. Muaj 4 ib fim , 6 ntug thiab 4 axub nyob rau hauv ib txwm tetrahedron.
Muaj pes tsawg tus ntug muaj ib tug kheej kheej?
Ib lub ces kaum yog qhov twg 3 ntug ntsib. Ib lub voos xwmfab muaj 8 lub ces kaum, zoo li lub cuboid. A kheej kheej tsis muaj ntug thiab yog li ntawd tsis muaj kaum. Nws muaj ib lub ntsej muag nkhaus uas mus tag nrho txoj kev ncig.
Pom zoo:
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