No, ib daim duab peb sab tsis tuaj yeem yog daim duab peb sab sib npaug.
Puas yog daim duab peb sab sib npaug yog daim duab peb sab txoj cai piav qhia koj cov lus teb?
Daim duab peb sab sib npaug tsis tuaj yeem yog daim duab peb sab yogQhov no ua rau kev nkag siab vim tias lub kaum sab xis ntsuas hauv ib daim duab peb sab, tsis yog daim duab peb sab sib npaug, sib npaug 180 degrees. Hauv daim duab peb sab txoj cai, txawm li cas los xij, 3 lub kaum ntse ntse tsis tuaj yeem sib dhos. Qhov no yog vim nyob rau hauv daim duab peb sab, ib lub kaum sab xis sib npaug 90 degrees.
Dab tsi yog daim duab peb sab equilateral?
Kev piav qhia: Daim duab peb sab sib npaug muaj peb sab sib npaug, thiab tseem yog daim duab peb sab sib npaug nrog peb lub kaum sab xis uas txhua qhov txhais tau 60 degrees. Txhawm rau nrhiav qhov siab peb faib daim duab peb sab ua ob qhov tshwj xeeb 30 - 60 - 90txoj kab peb sab los ntawm kos ib kab ntawm ib ces kaum mus rau qhov nruab nrab ntawm sab nraud.
30 60 90 daim duab peb sab yog dab tsi?
Thiab li ntawd. Lub sab opposite lub kaum sab xis 30 ° yog qhov tsawg tshaj plaws, vim 30 degrees yog lub kaum sab xis me tshaj. Sab nraub qaum ntawm 60 ° lub kaum sab xis yuav yog qhov nruab nrab ntev, vim tias 60 ° yog lub kaum sab xis ntawm qhov nruab nrab ntawm daim duab peb sab.
Daim duab peb sab 45 degree hu ua dab tsi?
Piv txwv li, ib daim duab peb sab yuav muaj cov ces kaum uas tsim kev sib raug zoo, xws li 45°–45°–90°. Qhov no yog hu ua "angle-based" txoj cai daim duab peb sab. Ib "sab-raws li" txoj cai daim duab peb sab yog ib qho uas qhov ntev ntawm ob sab tsim qhov sib piv ntawm tag nrho cov lej, xws li 3: 4: 5, lossis ntawm lwm tus lej tshwj xeeb xws li tus lej golden.
