Cov txheej txheem:
- qhov twg yog qhov hypotenuse ntawm daim duab peb sab?
- Yuav ua li cas koj pom qhov ploj ntawm daim duab peb sab isosceles?
- Yuav ua li cas koj pom qhov ntev ntawm lub hypotenuse ntawm lub isosceles txoj cai peb sab los ntawm qhov ntev ntawm ob txhais ceg?
- Koj pom qhov ntev ntawm daim duab peb sab isosceles li cas?
Video: Qhov twg yog qhov hypotenuse ntawm daim duab peb sab isosceles?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Yog, lub hypotenuse yog ib txwm yog sab ntev tshaj, tab sis tsuas yog rau txoj cai kaum sab xis. Rau cov duab peb sab isosceles, ob sab sib npaug yog hu ua ob txhais ceg, thaum nyob rau hauv daim duab peb sab sib npaug txhua sab yog paub yooj yim li ob sab.
qhov twg yog qhov hypotenuse ntawm daim duab peb sab?
"Hypotenuse" tsuas yog ib lo lus uas txhais tau tias "qhov ntev tshaj plaws ntawm daim duab peb sab." Lub hypotenuse yog sab nraud ntawm lub kaum sab xis hauv daim duab peb sab. Nws tseem yog sab ntev tshaj ntawm daim duab peb sab.
Yuav ua li cas koj pom qhov ploj ntawm daim duab peb sab isosceles?
txhawm rau nrhiav ib sab tsis paub ntawm daim duab peb sab, koj yuav tsum paub qhov ntev ntawm ob sab thiab / lossis qhov siab. Txhawm rau nrhiav tsis tau lub hauv paus ntawm daim duab peb sab isosceles, siv cov qauv hauv qab no: 2sqrt(L^2 - A^2), qhov L yog qhov ntev ntawm ob txhais ceg thiab A. yog qhov siab ntawm daim duab peb sab.
Yuav ua li cas koj pom qhov ntev ntawm lub hypotenuse ntawm lub isosceles txoj cai peb sab los ntawm qhov ntev ntawm ob txhais ceg?
Ib qho isosceles txoj kab peb sab yog daim duab peb sab isosceles thiab daim duab peb sab. Qhov no txhais tau hais tias nws muaj ob sab sib koom ua ke thiab ib lub kaum sab xis. Yog li ntawd, ob sab congruent yuav tsum yog ob txhais ceg. Los ntawm qhov no peb tuaj yeem xaus tias qhov ntev hypotenuse yog qhov ntev ntawm ib ceg muab faib los ntawm \begin{align}\sqrt{2}\end{align}
Koj pom qhov ntev ntawm daim duab peb sab isosceles li cas?
Nyob hauv ib daim duab peb sab isosceles, cov sab sib npaug ua rau lub kaum sab xis. Lawv muaj qhov sib npaug ntawm qhov sib npaug, 1: 1. Txhawm rau nrhiav tus lej piv ntawm lub hypotenuse h, peb muaj, raws li Pythagorean theorem, h 2=1 2 + 12=2.
Pom zoo:
Puas yog daim duab peb sab sib npaug yog daim duab peb sab?
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.
Nyob rau hauv daim duab peb sab txoj cai lub square ntawm hypotenuse?
Pythagorean Theorem. Lub Pythagorean txoj kev xav hais tias nyob rau hauv ib tug txoj cai daim duab peb sab, lub square ntawm qhov ntev ntawm lub hypotenuse sib npaug rau cov lej ntawm cov squares ntawm qhov ntev ntawm ob txhais ceg ntawm txoj cai daim duab peb sab .
Qhov twg yog qhov ntev ntawm lub hypotenuse ntawm daim duab peb sab?
Nyob rau hauv geometry, lub hypotenuse yog qhov ntev tshaj plaws ntawm daim duab peb sab sab xis, sab tawm ntawm lub kaum sab xis. Qhov ntev ntawm lub hypotenuse tuaj yeem pom siv Pythagorean theorem, uas hais tias lub square ntawm qhov ntev ntawm lub hypotenuse sib npaug ntawm cov squares ntawm qhov ntev ntawm ob sab Ntev npaum li cas ntawm qhov hypotenuse ntawm daim duab peb sab 8cm 15cm?
Vim li cas daim duab peb sab isosceles hu ua qhov ntawd?
Ib daim duab peb sab isosceles yog li ntawd muaj ob sab sib npaug thiab ob lub kaum sib npaug … Daim duab peb sab nrog txhua sab sib npaug yog hu ua daim duab peb sab sib npaug, thiab daim duab peb sab uas tsis muaj sab sib npaug yog hu ua daim duab peb sab scalene .
Puas yog daim duab peb sab isosceles muaj cov kaum sib npaug?
Ib daim duab peb sab isosceles yog li ntawd muaj ob sab sib npaug thiab ob lub kaum sib npaug Lub npe muab los ntawm Greek iso (tib yam) thiab skelos (ceg). Daim duab peb sab nrog txhua sab sib npaug yog hu ua daim duab peb sab sib npaug, thiab daim duab peb sab uas tsis muaj sab sib npaug yog hu ua daim duab peb sab scalene .
