Dab tsi yog geometric khoom ua los ntawm polygons?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Tsuas muaj tsib geometric khoom uas tau ua siv ib txwm polygon thiab muaj tib tus lej ntawm cov no polygons ntsib ntawm txhua lub ces kaum. Tsib Platonic cov khoom khib nyiab (los yog ib txwm polyhedra) yog tetrahedron, lub voos xwmfab, octahedron, dodecahedron, thiab icosahedron.

Ntxiv mus, dab tsi yog 5 cov polyhedrons tsis tu ncua?

Platonic khoom, ib yam ntawm cov tsib geometric solids uas nws lub ntsej muag zoo tib yam, tsis tu ncua polygons sib ntsib ntawm tib lub kaum sab xis peb sab. Kuj tseem hu ua tsib tsis tu ncua polyhedra , lawv muaj tetrahedron (los yog pyramid), lub voos xwmfab, octahedron, dodecahedron, thiab icosahedron.

Ib sab saum toj no, hom polygon twg yog octahedron? 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, a Platonic khoom muaj yim daim duab peb sab sib npaug , plaub qhov sib ntsib ntawm txhua qhov vertex.

Ntawm no, dab tsi yog 5 Platonic solids?

Cov tsib Platonic Solids tau paub peb ntau txhiab xyoo lawm. Cov no tsib tshwj xeeb polyhedra yog lub tetrahedron, lub voos xwmfab, lub octahedron, lub icosahedron, thiab lub dodecahedron.

Dab tsi yog polyhedron hauv geometry?

Hauv geometry , a polyhedron tsuas yog cov khoom peb-seem uas muaj cov khoom sib sau ua ke, feem ntau koom nrog lawv cov npoo. Lo lus muab los ntawm Greek poly (ntau) ntxiv rau Indo-European hedron (lub rooj). Lub plural ntawm polyhedron yog " polyhedra "(los yog qee zaum" polyhedrons ").