Ib daim duab peb sab isosceles yog ib hom duab peb sab uas muaj ob sab uas ntev tib yam. Ob lub cim cim yog ob qho tib si ntev. Ob lub kaum sab nraud ntawm ob lub cim ob sab kuj zoo ib yam: ob lub kaum sab xis yog 70 ° Tag nrho peb lub kaum sab hauv sab hauv lub kaum sab xis Qhov ntsuas ntawm lub kaum sab nrauv ntawm lub vertextsis cuam tshuam los ntawm sab twg yog txuas ntxiv : ob sab sab nrauv lub kaum sab xis uas tuaj yeem tsim ntawm lub vertex los ntawm kev sib txuas ua ke ntawm ib sab lossis lwm qhov yog cov kaum sab xis thiab yog li sib npaug. https://en.wikipedia.org › wiki › Internal_and_external_angles
kaum sab hauv thiab sab nraud - Wikipedia
ntxiv rau 180 ° vim nws yog daim duab peb sab.
Ua txhua lub kaum sab xis ntawm daim duab peb sab isosceles ntxiv txog 180?
Ob sab sib npaug ntawm daim duab peb sab isosceles yog ob txhais ceg thiab sab thib peb yog lub hauv paus. Lub kaum sab xis ntawm qhov sib npaug yog hu ua lub kaum sab xis. Txhua lub kaum sab xis yuav tsum sib npaug 180 degrees thaum ntxiv ua ke.
Ob lub ces kaum twg sib npaug hauv daim duab peb sab isosceles?
Txoj kev ntawm Isosceles daim duab peb sab
Ob sab sib npaug ntawm daim duab peb sab isosceles hu ua ob txhais ceg thiab lub kaum sab xis ntawm lawv yog hu ua lub kaum sab xis lossis lub kaum sab xis. Sab nraub qaum lub kaum sab xis hu ua lub hauv paus thiab lub hauv paus kaum sab xis yog sib npaug.
Puas yog daim duab peb sab isosceles muaj 2 lub kaum ntse ntse?
Cov lus teb:
Piav: Ib daim duab peb sab yuav tsum muaj tsawg kawg yog ob lub kaum ntse ntse; yog tias obtuse, ces thiab yog cov kaum sab xis ntawm. Txij li thaum isosceles, Isosceles Daim duab peb sab Theorem xav tau ob lub kaum sab xis kom sib haum; lawv yuav tsum yog ob lub kaum sab xis thiab.
Yuav muaj pes tsawg lub kaum sab xis tuaj yeem muaj 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∘.
