Txoj Kev: Cov qauv rau kev xam qhov ntsuas ntawm lub kaum sab xis ntawm daim duab peb sab tuaj yeem muab tau raws li r=(P + B - H) / 2 Thiab peb paub tias thaj tsam ntawm ib qho lub voj voog yog PIr2 qhov twg PI=22 / 7 thiab r yog lub vojvoog ntawm lub voj voog. Li no thaj tsam ntawm lub voj voog yuav yog PI((P + B - H) / 2)2
Formula of right angle triangle yog dab tsi?
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.
Dab tsi yog qhov sib npaug ntawm daim duab peb sab?
Ib lub kaum sab xis muaj ib lub kaum sib npaug li 90 degrees Daim duab peb sab txoj cai kuj tuaj yeem yog daim duab peb sab isosceles - uas txhais tau hais 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. Nov yog daim duab peb sab nkaus xwb uas yog daim duab peb sab isosceles.
Do all right triangles sib npaug 180?
Cov duab peb sab xis yog daim duab peb sab uas ib lub kaum sab hauv yog 90 degrees, lub kaum sab xis. Txij li thaum peb lub kaum sab hauv ntawm daim duab peb sab ntxiv txog 180 degrees, nyob rau hauv daim duab peb sab, vim tias ib lub kaum ntse ntse yog 90 degrees, ob qho tib si yuav tsum tau ntxiv txog 90 degrees (lawv yog complementary).
Qhov ntev tshaj plaws ntawm daim duab peb sab yog dab tsi?
Lub hypotenuse ntawm daim duab peb sab txoj cai yog ib txwm yog sab opposite lub kaum sab xis. Nws yog sab ntev tshaj plaws hauv daim duab peb sab.
