Video: Cov duab zoo li cas tuaj yeem tsim los ntawm qhov muab net?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov duab zoo li cas tuaj yeem tsim los ntawm qhov muab net ? cylinder cone cube ncig prism.
Ua kom pom qhov no, qhov zoo li cas tuaj yeem tsim los ntawm lub vas?
A geometry net yog 2-dimensional shape uas tuaj yeem muab tais rau hauv 3-dimensional shape lossis ib qho khoom. Los yog ib lub vas 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 qho khoom yuav muaj cov nets sib txawv.
Tsis tas li ntawd, puas muaj net ntawm ib tug kheej kheej? Nws yog tsis yooj yim sua kom ua ib tug zoo meej kheej kheej (pob los yog lub ntiaj teb) los ntawm ib daim ntawv tiaj tus. Daim ntawv tuaj yeem nkhaus hauv ib qho kev taw qhia, tab sis tsis tuaj yeem nkhaus hauv ob qho kev qhia tib lub sijhawm. Lwm txoj kev los ua ib tug kheej kheej yog nrog taw tes ellipses. Globes tuaj yeem ua tau li no, txij li cov npoo ntawm lub net khiav raws longitudes.
Ib sab saum toj no, dab tsi 3 seem duab tuaj yeem siv los ua?
Daim vis dis aus no qhia txog kev tsim cov net rau ib daim duab plaub pyramid thiab a daim duab peb sab prism los ntawm 3-d duab. Lub net ntawm ib qho khoom yog ib daim duab 2-dimensional uas tuaj yeem muab tais rau hauv cov khoom ntawd. Daim vis dis aus no yuav qhia cov nets ntawm lub voos xwmfab, lub tog raj kheej thiab lub khob hliav qab.
Net Diagram yog dab tsi?
A network daim duab yog ib daim duab sawv cev ntawm txhua txoj haujlwm, lub luag haujlwm thiab kev ua haujlwm-khiav rau ib qhov project. Nws yog siv los ua daim ntawv qhia lub sijhawm thiab kev ua haujlwm ib ntus rau qhov project, nrog rau kev taug qab nws qhov kev nce qib los ntawm txhua theem, mus txog thiab suav nrog kev ua tiav.
Pom zoo:
Koj puas tuaj yeem siv kev txhaum thiab cos ntawm cov duab peb sab tsis zoo?
Xav txog lwm daim duab peb sab uas tsis yog txoj cai, sau npe raws li qhia nrog sab ntev x thiab y. Peb tuaj yeem muab tau ib txoj cai muaj txiaj ntsig uas tsuas muaj cov haujlwm cosine xwb. Txoj cai ntawm cosines tuaj yeem siv los nrhiav kev ntsuas ntawm lub kaum sab xis lossis ib sab ntawm daim duab peb sab uas tsis yog txoj cai yog peb paub: peb sab thiab tsis muaj kaum
Koj tuaj yeem ua pov thawj li cas 2 daim duab peb sab zoo sib xws siv lub kaum sab xis sab SAS zoo sib xws postulate?
SAS Similarity Theorem hais tias yog ob sab hauv ib daim duab peb sab yog proportional rau ob sab hauv lwm daim duab peb sab thiab lub kaum sab xis nyob rau hauv ob qho tib si congruent, ces ob daim duab peb sab zoo ib yam. Ib qho kev hloov pauv zoo sib xws yog ib lossis ntau qhov kev hloov pauv tsis tu ncua ua raws li kev dilation
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