Video: Dab tsi yog equidistant los ntawm peb sab ntawm daim duab peb sab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov point uas yog sib npaug rau txhua tus sab ntawm a daim duab peb sab hu ua lub incenter: Ib qho nruab nrab yog ib qho kab uas muaj ib qho ntawm nws qhov kawg hauv qhov vertex ntawm ib qho daim duab peb sab thiab lwm qhov kawg ntawm qhov nruab nrab ntawm qhov sab opposite lub vertex. Cov peb medians ib daim duab peb sab ntsib hauv centroid.
Hais txog qhov no, dab tsi yog equidistant los ntawm peb vertices ntawm daim duab peb sab?
CIRCUMCENTER ntawm a daim duab peb sab yog lub ntsiab lus ntawm lub dav hlau equidistant los ntawm peb vertices ntawm daim duab peb sab . Lub circumcenter tau tsim los ntawm kev txheeb xyuas qhov nruab nrab ntawm ntu AC, CD, thiab DA. Tom qab ntawd ib txoj kab perpendicular tau kos los ntawm midpoints perpendicular mus rau sab ntu.
Qhov thib ob, lub ntsiab lus twg yog qhov sib npaug ntawm ob sab? Lub incenter yog sib npaug rau tag nrho cov sab ntawm daim duab peb sab thiab yuav ALWAYS sib tshuam sab hauv daim duab peb sab. Cov taw tes ntawm kev sib tshuam ntawm peb ntawm ntau kab.
Ib yam li ntawd, vim li cas Incenter sib npaug ntawm ob sab ntawm daim duab peb sab?
Cov INCENTER ntawm a daim duab peb sab yog lub ntsiab lus ntawm sab hauv ntawm lub daim duab peb sab uas yog sib npaug los ntawm peb sab . Txij li lub ntsiab lus sab hauv mus rau lub kaum sab xis uas yog sib npaug los ntawm ob sab ntawm lub kaum sab xis nyob ntawm lub kaum sab xis bisector, ces tus Incenter yuav tsum nyob rau ntawm lub kaum sab xis ntawm txhua lub kaum sab xis ntawm lub daim duab peb sab.
Qhov nruab nrab ntawm daim duab peb sab hu ua dab tsi?
Qhov nruab nrab ntawm a daim duab peb sab yog tsim los ntawm kev noj tej yam muab daim duab peb sab thiab txuas cov midpoints ntawm txhua ceg ntawm lub daim duab peb sab mus rau qhov opposite vertex. Cov kab ntu tsim los ntawm kev sib txuas cov ntsiab lus no yog hu ua qhov nruab nrab. Lub centroid yog qhov chaw ntawm ib daim duab peb sab uas tuaj yeem xav tias yog qhov chaw nruab nrab ntawm pawg.
Pom zoo:
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