NET prism yog dab tsi?
NET prism yog dab tsi?

Video: NET prism yog dab tsi?

Video: NET prism yog dab tsi?
Video: qhia txiav video hauv premiere 1 2024, Kaum ib hlis
Anonim

Cov net ntawm ib daim duab khoom yog tsim thaum lub cev muaj zog yog nthuav tawm raws nws cov npoo thiab nws lub ntsej muag tau muab tso rau hauv ib qho qauv hauv ob qhov ntev. Nets ntawm rectangular prism yog ua los ntawm cov duab plaub thiab squares. Siv a net txhawm rau nrhiav thaj chaw saum npoo ntawm ib daim duab plaub prism.

Tom qab ntawd, lub net ntawm ib lub cev yog dab tsi?

Ib tug geometry net yog 2-dimensional puab uas tuaj yeem folded los ua 3-dimensional puab los yog ib qho khoom. Los yog a net yog ib qho qauv ua thaum lub npoo ntawm daim duab peb sab yog nteg tawm tiaj tus uas qhia txhua lub ntsej muag ntawm daim duab.

Ib yam li ntawd, thaj chaw net yog dab tsi? A net yog ib daim duab uas qhia cov npoo thiab ntsej muag ntawm ib qho khoom hauv ob qhov ntev. Koj tuaj yeem xav txog ib net raws li qhov koj yuav tau txais yog tias koj "kho" ib qho khoom. Cov net yog ua los ntawm peb congruent rectangles thiab ob congruent equilateral triangles. Cov thaj chaw saum npoo yog qhov sum ntawm thaj chaw ntawm tsib daim duab.

Ua li no, ua li cas koj kos ib lub voj voog prism net?

Rau ua koj net , koj nco ntsoov tias koj lub thawv yuav tsum muaj tag nrho ntawm 6 sab. Koj txiav txim siab ua a net qhov twg hauv qab yog surrounded los ntawm nws plaub sab thiab ces sab saum toj txuas nrog ib sab. Qhov no net ntawm lub thawv uas koj yog ua kuj hu ua txoj cai rectangular prism , pib a duab plaub lub thawv.

Tus qauv rau saum npoo yog dab tsi?

Peb kuj tuaj yeem sau npe rau ntev (l), dav (w), thiab qhov siab (h) ntawm lub prism thiab siv cov qauv, SA = 2lw + 2lh + 2hw, los nrhiav thaj chaw saum npoo.

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