Nyob hauv geometry, daim duab peb sab sib npaug yog daim duab peb sab uas tag nrho peb sab muaj qhov ntev. Nyob rau hauv cov Euclidean geometry paub, ib daim duab peb sab equilateral kuj equiangular; uas yog, tag nrho peb lub kaum sab hauv kuj muaj kev sib koom ua ke thiab yog txhua 60 °.
Dab tsi yog daim duab peb sab sib npaug?
Ib daim duab peb sab sib npaug yog daim duab peb sab nrog tag nrho peb sab ntawm qhov sib npaug, sib xws rau qhov uas tuaj yeem raug hu ua "ib txwm" daim duab peb sab. Yog li ntawd, daim duab peb sab sib npaug yog qhov tshwj xeeb ntawm daim duab peb sab isosceles tsis yog ob, tab sis tag nrho peb sab sib npaug. Ib daim duab peb sab sib npaug kuj muaj peb qhov sib npaug.
Dab tsi yog daim duab peb sab sib npaug?
Hauv geometry, daim duab peb sab sib npaug yog daim duab peb sab uas muaj tag nrho nws sab sib npaug ntawm qhov ntev. Piv txwv li, ib daim duab peb sab nrog nws peb sab sib npaug li 5cm yog daim duab peb sab sib npaug. Vim tias peb sab sib npaug yog li peb lub kaum sab xis, tawm tsam rau sab sib npaug, sib npaug hauv kev ntsuas.
Dab tsi yog daim duab peb sab sib npaug?
Ib daim duab peb sab sib npaug yog 3-sided polygon (pom zoo)uas nws ob sab yog tag nrho congruent (s sib npaug ntawm qhov ntev). Ib daim duab peb sab sib npaug kuj muaj 3 lub kaum sab xis, tag nrho 60˚ hauv kev ntsuas.
Puas yog daim duab peb sab sib npaug 90?
Kev piav qhia: Daim duab peb sab equilateral muaj tag nrho cov ces kaum sib npaug li 60 degrees. Rau daim duab peb sab txoj cai ib lub kaum sab xis yuav tsum yog 90 degrees. … Tsuas yog tias nws yog daim duab peb sab curvilinear - piv txwv li. nyob rau saum npoo ntawm ib tug kheej kheej.
