Vim li no, cov duab muaj tag nrho 16 lub kaum sab xis.
Yuav ua li cas muaj ntau yam ntawm lub kaum sab xis muaj?
The peb hom ntawm txoj cai peb sab yog raws li tau hais hauv qab no. Ib daim duab peb sab isosceles yog daim duab peb sab uas cov ces kaum yog 90º, 45º, thiab 45º. Daim duab peb sab txoj cai yog daim duab peb sab uas ib lub kaum sab xis yog 90º thiab ob lub kaum sab xis yog qhov sib txawv.
Yuav ua li cas yog lub mis rau txoj cai kaum sab xis?
Txoj Cai Peb Hlis thiab Pythagorean Theorem. Lub Pythagorean Theorem, a2 + b2=c2, a 2 + b 2=c 2, siv tau los nrhiav qhov ntev ntawm ib sab ntawm ib daim duab peb sab.
Qhov twg yog sab ntev tshaj plaws nyob rau hauv daim duab peb sab?
Lub hypotenuse ib txwm yog sab ntev tshaj plaws nyob rau hauv daim duab peb sab vim nws yog opposite ntawm lub kaum sab xis loj tshaj plaws, lub kaum cuaj caum degrees.
Puas yog daim duab peb sab kaum muaj 2 sab sib npaug?
Ib daim duab peb sab txoj cai kuj yog ib qho isosceles daim duab peb sab-- uas txhais tau tias nws muaj ob sab uas sib npaug. Lub kaum sab xis isosceles muaj 90-degree kaum sab xis thiab ob lub kaum 45-degree. Qhov no tsuas yog txoj cai daim duab peb sab uas yog daim duab peb sab isosceles. … Lwm qhov nthuav daim duab peb sab yog 30-60-90 degree daim duab peb sab.
