Video: Dab tsi yog qhov point kab kab ntu Ray thiab lub kaum sab xis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A ray txuas mus tsis kawg nyob rau hauv ib qho kev taw qhia, tab sis xaus ntawm ib leeg taw tes nyob rau hauv lwm txoj kev. Qhov ntawd taw tes hu ua kawg- taw tes ntawm ray . Nco ntsoov tias a kab ntu muaj ob qhov kawg- cov ntsiab lus , a ray ib,a a kab tsis muaj. Ib lub kaum sab xis tuaj yeem tsim tau thaum ob rays ntsib ntawm ib qho kev sib tham taw tes . Cov rays yog ob sab ntawm cov lub kaum sab xis.
Tom qab ntawd, dab tsi yog qhov point kab kab ntu thiab Ray?
A ray pib ntawm a taw tes thiab mus rau infinity. A kab tsis muaj qhov kawg cov ntsiab lus . A kab ntu muaj ob qhov kawg. A kab ntu txuas ob qhov kawg. Yog ob leeg kab tsis tuaj yeem ntsib ntawm ib qho twg taw tes , lawv hu ua parallel kab.
Tom qab ntawd, lo lus nug yog, dab tsi yog ib qho piv txwv ntawm kab ntu? Piv txwv ntawm kab ntu suav nrog ob sab ntawm daim duab peb sab lossis square. Feem ntau, thaum ob qho tib si ntus Qhov kawg cov ntsiab lus yog vertices ntawm ib tug polygon los yog polyhedron, lub kab ntu yog ib qho ntug (ntawm polygon lossis polyhedron) yog tias lawv nyob ib sab vertices, lossis lwm yam kab pheeb ces kaum.
Ua raws li qhov no hauv kev xav, dab tsi yog lub ntsiab lus hauv cov ntsiab lus geometry?
A taw tes hauv geometry yog qhov chaw. Nws tsis muaj qhov loj me piv txwv li tsis dav, tsis ntev thiab tsis tob. A taw tes yog qhia los ntawm ib qho chaw. Ib kab yog txhais raws li kab ntawm cov ntsiab lus uas extends infinitely nyob rau hauv ob txoj kev. Nws muaj ib qhov ntev, ntev.
Puas tuaj yeem ntsuas qhov ntu?
Tsis zoo li ib kab , a kab ntu muaj qhov ntev ntev. Qhov ntev ntawm a kab ntu tuaj yeem ua ntsuas xws li nyob rau hauv metric units xws li millimeters, centimeters, los yog kev cai units xws li ko taw los yog ntiv tes.
Pom zoo:
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