Cov txheej txheem:
- Puas yog qhov nruab nrab ib txwm nyob hauv daim duab peb sab?
- Daim duab peb sab twg muaj qhov chaw nyob hauv nws sab hauv?
- Lub incenter nyob rau hauv daim duab peb sab nyob qhov twg?
- Qhov chaw nruab nrab ntawm daim duab peb sab obtuse nyob qhov twg piav qhia?
Video: Thaum twg lub chaw nyob sab hauv daim duab peb sab?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Definition Lub incenter yog ib qho ntawm daim duab peb sab cov ntsiab lus ntawm concurrency tsim los ntawm kev sib tshuam ntawm daim duab peb sab 3 lub kaum sab xis bisectors. Yog tias daim duab peb sab yog obtuse, xws li tus ntawm daim duab hauv qab no ntawm sab laug, ces lub incenter nyob rau hauv daim duab peb sab sab hauv.
Puas yog qhov nruab nrab ib txwm nyob hauv daim duab peb sab?
Zoo li centroid, incenter ib txwm nyob hauv daim duab peb sabNws yog tsim los ntawm kev sib tshuam ntawm lub kaum sab xis bisectors ntawm peb vertices ntawm daim duab peb sab. Lub vojvoog ntawm lub voj voog yog tau los ntawm kev poob ib qho perpendicular los ntawm qhov nruab nrab mus rau ib qho ntawm daim duab peb sab ceg.
Daim duab peb sab twg muaj qhov chaw nyob hauv nws sab hauv?
Lub incenter yog Nagel taw tes ntawm daim duab peb sab nruab nrab (daim duab peb sab uas nws cov vertices yog nruab nrab ntawm ob sab) thiab yog li ntawd nyob hauv daim duab peb sab.
Lub incenter nyob rau hauv daim duab peb sab nyob qhov twg?
Lub incenter ntawm daim duab peb sab yog qhov taw qhia ntawm kev sib tshuam ntawm tag nrho peb sab hauv lub kaum sab xis ntawm daim duab peb sab. Qhov taw tes no yog qhov sib npaug ntawm ob sab ntawm daim duab peb sab, vim tias lub hauv paus axis qhov kev sib tshuam yog qhov chaw nruab nrab ntawm daim duab peb sab lub voj voog.
Qhov chaw nruab nrab ntawm daim duab peb sab obtuse nyob qhov twg piav qhia?
Lub incenter ntawm daim duab peb sab obtuse yog inside ntawm daim duab peb sab. Qhov nruab nrab ntawm daim duab peb sab yog ib txwm nyob rau hauv daim duab peb sab, thiab nws txav raws kab nkhaus mus rau sab.
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.
Yuav ua li cas yog txoj hauv kev twg yog lub tuam txhab daim duab peb sab lub tsho lub tsho ua haujlwm txaus ntshai?
Cov neeg ua haujlwm hauv lub Hoobkas, feem ntau yog cov ntxhais hluas tsis ntev los no los ntawm Tebchaws Europe, tsis muaj sijhawm lossis sijhawm khiav tawm. Cov hluav taws kub hnyiab sai sai tua 146 tus neeg ua haujlwm Lub tsev tsuas muaj ib qho kev khiav tawm hluav taws, uas tau tawg thaum lub sijhawm cawm.
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 .
Nyob rau hauv ib lub kaum sab xis daim duab peb sab r yog sib npaug?
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 PIr 2 qhov twg PI=22 / 7 thiab r yog lub vojvoog ntawm lub voj voog.
Nyob hauv daim duab peb sab scalene sab ntev?
Nyob rau hauv txhua daim duab peb sab, sab shortest yog opposite lub kaum tsawg tshaj plaws thiab lub ntev sab yog opposite lub kaum loj tshaj . Puas yog daim duab peb sab scalene qhov ntev tshaj plaws yog opposite lub kaum sab xis nrog qhov loj tshaj plaws ntsuas?
