Ib daim duab peb sab yog ib tug polygon, uas yog ib tug kaw zoo li ib tug square los yog ib tug hexagon, tab sis ib tug daim duab peb sab tsuas muaj peb sab … Daim duab peb sab los ntawm Latin lo lus triangulus angulus vertex ntawm ib lub kaum sab xis yog qhov taw tes uas ob lub rays pib los yog sib ntsib, qhov twg ob kab ntu tuaj koom lossis sib ntsib, qhov twg ob kab sib tshuam (hla), lossis ib qho kev sib xyaw ua ke ntawm rays, ntu thiab kab uas ua rau ob qho tib si "sab" sib ntsib ntawm ib qho chaw. https://en.wikipedia.org › wiki › Vertex_(geometry)
Vertex (geometry) - Wikipedia
"peb-kob" lossis "muaj peb lub kaum," los ntawm cov hauv paus tri-, "peb," thiab angulus, "lub kaum los yog kaum."
Dab tsi yog daim duab peb sab hauv lus Askiv?
Ib daim duab peb sab yog ib yam khoom, kev npaj, lossis cov duab tiaj tus nrog peb sab ncaj thiab peb lub kaum. Cov qauv no yog nyob rau hauv cov xim pastel nrog peb lub duab plaub thiab peb daim duab peb sab. Nws cov txheej txheem kwv yees ua ib daim duab peb sab sib npaug.
hom lus twg yog daim duab peb sab?
Ib tug polygon nrog peb sab thiab peb lub kaum. Ib qho cuab yeej percussion ua los ntawm kev ua ib lub pas hlau rau hauv daim duab peb sab uas qhib ntawm ib lub kaum ntse ntse.
daim duab peb sab hauv koj cov lus yog dab tsi?
Ib daim duab peb sab muaj peb sab, peb vertices, thiab peb lub ces kaumCov lej ntawm peb lub kaum sab hauv ntawm daim duab peb sab yog ib txwm 180 °. Tus lej ntawm qhov ntev ntawm ob sab ntawm daim duab peb sab yog ib txwm ntau dua qhov ntev ntawm peb sab. … Qhov chaw ntawm daim duab peb sab yog sib npaug rau ib nrab ntawm cov khoom ntawm nws lub hauv paus thiab qhov siab.
Thaum twg lo lus daim duab peb sab tsim?
triangle (n.)
late 14c., los ntawm Old French daim duab peb sab (13c.), los ntawm Latin triangulum "daim duab peb sab," noun siv neuter ntawm adjective triangulus "peb-kob, muaj peb lub ces kaum," los ntawm tri- "peb" (saib tri-) + angulus "kob, kaum" (saib angle (n.)).
