Lub thawv puas yog lub voos xwmfab?
Lub thawv puas yog lub voos xwmfab?

Video: Lub thawv puas yog lub voos xwmfab?

Video: Lub thawv puas yog lub voos xwmfab?
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Anonim

Ib rooj plaub tshwj xeeb rau a lub thawv yog a kub . Qhov no yog thaum txhua sab yog tib qhov ntev. Koj tuaj yeem pom qhov ntim ntawm a kub tsuas yog paub qhov ntsuas ntawm ib sab. Qhov no yog qhov uas peb tau txais lo lus "cubed".

Ib yam li ntawd, koj tuaj yeem nug, lub thawv zoo li cas?

Thaum cov ntaub ntawv lej hais txog txhua yam xws li polyhedron ua lub cuboid, lwm qhov chaw siv "cuboid" xa mus rau ib qho puab ntawm hom no uas txhua lub ntsej muag yog lub duab plaub (thiab yog li txhua khub ntawm lub ntsej muag uas nyob ib sab sib ntsib hauv lub kaum sab xis); Qhov no txwv ntau hom cuboid tseem hu ua rectangularcuboid, txoj cai

Ib yam li ntawd, lub voos xwmfab siv rau dab tsi? Nws kuj yog ib qho peb-dimensional zoo uas txhua ntawm cov rau sab yog ib tug square los yog ib yam dab tsi zoo li ib tug kub , zoo li dej khov kub los yog nqaij txiav rau hauv kub ). Lub npe kub rov qab mus rau Greek lo lus kybos, uas yog asix-sided tuag siv hauv kev ua si. Raws li ib tug verb, kub txhais tau tias tocut rau hauv kub cov duab.

Kuj paub, daim duab plaub puas tuaj yeem ua lub voos xwmfab?

Ib square yog ib duab plaub nrog txhua sab sib npaug. Soall squares yog duab plaub , tab sis tsis yog tag nrho duab plaub yog squares. Ib yam li ntawd, a kub yog ib daim duab plaub nrog txhua sab sib npaug, thiab yog li ntawd txhua lub ntsej muag ntawm thaj tsam sib npaug. Yog li ntawd a kub yog ib lub prism, tab sis tsis yog tag nrho cov duab plaub kub.

Puas yog ib lub voos xwmfab?

Lub 2-dimensional (2D) zoo li lub voj voog, square , triangle, etc.) uas a kub yog ua los ntawm issquares. Ob sab (ntsej muag) ntawm a kub yog squares. Cov npoo yog cov kab ncaj. Cov ces kaum (vertices) yog nyob rau ntawm rightangles.

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