Hauv geometry, ib qho octahedron (plural: octahedra, octahedrons) yog polyhedron nrog yim lub ntsej muag, kaum ob ntug, thiab rau vertices. Lo lus feem ntau yog siv los xa mus rau qhov tsis tu ncua octahedron, Platonic cov khoom tsim los ntawm yim daim duab peb sab sib npaug, plaub qhov sib ntsib ntawm txhua qhov vertex.
piv txwv ntawm octahedron yog dab tsi?
Lub octahedron muaj yim lub ntsej muag, yog li cov lus ua ntej octa-. Ib qho piv txwv ntawm octahedral compound yog molybdenum hexacarbonyl (Mo(CO) 6). Lub sij hawm octahedral yog siv me ntsis xoob los ntawm chemists, tsom rau lub geometry ntawm daim ntawv cog lus rau lub hauv paus atom thiab tsis xav txog qhov sib txawv ntawm cov ligands lawv tus kheej.
Vim li cas octahedron hu ua octahedron?
Lo lus octahedron yog muab los ntawm Greek lo lus 'Oktaedron' uas txhais tau tias 8 ntsib. Ib qho octahedron yog polyhedron nrog 8 lub ntsej muag, 12 npoo, thiab 6 ntsug thiab ntawm txhua vertex 4 npoo sib ntsib. Nws yog ib qho ntawm tsib platonic solids nrog lub ntsej muag uas zoo li tus duab peb sab sib npaug.
Puas muaj octahedron muaj lub hauv paus?
Base. Lub hauv paus ntawm ib qho octahedron yog a square. Yog tias koj daim duab octahedron yog ob qho tib si square pyramids uas muaj lawv cov hauv qab kov, ces lub hauv paus ntawm lub octahedron yog lub xwmfab ntawm ob lub pyramids.
Puas yog octahedron lub pyramid?
Nyob rau hauv 4-dimensional geometry, lub pyramid octahedral yog bounded los ntawm ib octahedron ntawm lub hauv paus thiab 8peb lub hlwb pyramid uas sib ntsib ntawm apex.
