Cov txheej txheem:
- Puas Incentre ib txwm nyob hauv daim duab peb sab?
- Yuav ua li cas nyob hauv daim duab peb sab?
- Puas yog qhov nruab nrab ntawm daim duab peb sab nyob sab nraum daim duab peb sab?
- Lub incenter nyob qhov twg hauv daim duab peb sab?
Video: Vim li cas lub incenter ib txwm nyob hauv daim duab peb sab?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Lub incenter yog qhov chaw peb sab kawg uas peb yuav tshawb xyuas. Nws yog lub ntsiab lus tsim lub hauv paus chiv keeb ntawm ib lub voj voog inscribed hauv daim duab peb sab. Zoo li lub centroid, lub incenter ib txwm nyob hauv daim duab peb sab. Nws yog tsim los ntawm kev noj cov kev sib tshuam ntawm lub kaum sab xis ntawm peb lub voj voos ntawm daim duab peb sab
Puas Incentre ib txwm nyob hauv daim duab peb sab?
Incenters, zoo li centroids, yog ib txwm nyob hauv lawv daim duab peb sab Daim duab saum toj no qhia ob daim duab peb sab nrog lawv cov incenters thiab inscribed voj voog, los yog incircles (lub voj voog kos hauv daim duab peb sab yog li lub voj voog NW nyuam qhuav pib. kov ob sab ntawm txhua daim duab peb sab). Lub incenters yog qhov chaw ntawm lub incircles.
Yuav ua li cas nyob hauv daim duab peb sab?
Lub incenter yog lub ntsiab lus ntawm concurrency ntawm lub kaum sab xis ntawm txhua lub kaum sab hauv ntawm daim duab peb sab. Hauv lwm lo lus, lub ntsiab lus uas peb lub kaum sab xis ntawm lub kaum sab xis ntawm daim duab peb sab sib ntsib yog hu ua incenter. Lub incenter ib txwm nyob hauv daim duab peb sab.
Puas yog qhov nruab nrab ntawm daim duab peb sab nyob sab nraum daim duab peb sab?
Lub incenter yog ib txwm nyob hauv daim duab peb sab sab hauv, tsis hais seb daim duab peb sab yog hom twg.
Lub incenter nyob qhov twg hauv daim duab peb sab?
Lub incenter ntawm ib daim duab peb sab yog inside ntawm daim duab peb sabLub incenter ntawm ib daim duab peb sab yog sab hauv ntawm daim duab peb sab. Lub incenter ntawm daim duab peb sab obtuse yog sab hauv 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.
Thaum twg lub chaw nyob sab hauv daim duab peb sab?
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 .
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?
