Kev piav qhia: daim duab peb sab isosceles ib txwm muaj ob qhov sib npaug sab hauv cov ces kaum sab hauv Qhov ntsuas ntawm lub kaum sab nrauv ntawm lub vertex tsis cuam tshuam los ntawm sab twg txuas ntxiv: ob lub kaum sab nrauv uas tuaj yeem yuav tsim ntawm ib tug vertex los ntawm expanding alternately ib sab los yog lwm yam yog ntsug kaum thiab yog li sib npaug. https://en.wikipedia.org › wiki › Internal_and_external_angles
kaum sab hauv thiab sab nraud - Wikipedia
thiab tag nrho peb lub kaum sab hauv ntawm ib daim duab peb sab ib txwm muaj cov lej ntawm cov lej. Vim qhov no yog daim duab peb sab isosceles, tag nrho cov kaum sab hauv yuav tsum yog cov kaum sab xis.
Puas yog daim duab peb sab isosceles mob lossis obtuse?
Txhua daim duab peb sab isosceles muaj ib qho axis ntawm symmetry raws lub perpendicular bisector ntawm nws lub hauv paus. Ob lub kaum sab nraud ntawm ob txhais ceg sib npaug thiab ib txwm mob, yog li kev faib tawm ntawm daim duab peb sab ua mob, sab xis, lossis obtuse tsuas yog nyob ntawm lub kaum sab xis ntawm nws ob txhais ceg.
Lub kaum sab xis puas yog isosceles?
Ib daim duab peb sab hnyav muaj txhua lub kaum ntsuas ntsuas tsawg dua 90º. Faj seeb: Nws muaj peev xwm ua tau rau ib daim duab peb sab yuav ua tau scalene, isosceles, los yog sib npaug.
Yuav muaj pes tsawg lub kaum sab xis puas yog daim duab peb sab isosceles?
Muaj pes tsawg lub kaum sab xis tuaj yeem muaj daim duab peb sab isosceles? Txhua daim duab peb sab isosceles muaj ob lub kaum ntse ntse. Vim tias cov lej ntawm cov kaum sab hauv ntawm daim duab peb sab yuav tsum yog 180∘.
Dab tsi yog lub kaum sab xis isoscelesdaim duab peb sab?
Los ntawm kev txhais, daim duab peb sab isosceles yuav muaj tsawg kawg yog ob sab (thiab tsawg kawg yog ob lub kaum sab xis) uas sib haum, thiab tsis muaj lub kaum sab xis yuav ntau dua. Ntxiv thiab, zoo li txhua daim duab peb sab, peb lub kaum sab xis yuav suav rau.
