Video: Qhov siab puas tuaj yeem yog qhov nruab nrab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Feem ntau, qhov siab , cov neeg nruab nrab , thiab lub kaum sab xis bisectors yog qhov sib txawv. Txawm li cas los xij, hauv qee cov duab peb sab, lawv ua tau ua tib ntu. Hauv daim duab, lub qhov siab kos los ntawm lub vertex lub kaum sab xis ntawm daim duab peb sab isosceles ua tau ua pov thawj tias a nruab nrab zoo li lub kaum sab xis bisector.
Ib yam li ntawd, qhov nruab nrab puas tuaj yeem ua qhov siab?
Yog lawm. A nruab nrab txuas lub midpoint ntawm daim duab peb sab nrog lub opposite vertex. Ib qhov siab txuas lub vertex ntawm ib daim duab peb sab mus rau sab opposite ntawm lub vertex yog li lub kaum sab xis tsim ntawm ob ntu yog lub kaum sab xis.
Qhov thib ob, puas yog qhov siab ntawm daim duab peb sab sib npaug ntawm qhov nruab nrab? -Yog nruab nrab kos los ntawm vertex A yog kuj lub kaum sab xis bisector, lub daim duab peb sab yog isosceles xws li AB = AC thiab BC yog lub hauv paus. Yog li no nruab nrab yog kuj tus qhov siab . Hauv ib daim duab peb sab sib npaug , cwb qhov siab , nruab nrab thiab lub kaum sab xis bisector kos los ntawm tib vertex, sib tshooj.
Yog li ntawd, qhov txawv ntawm qhov siab thiab qhov nruab nrab yog dab tsi?
Ib qhov siab ntawm daim duab peb sab yog lub perpendicular kos los ntawm tej vertex mus rau nws tus opposite sab whereas a nruab nrab ntawm ib daim duab peb sab yog txoj kab sib txuas nrog txhua qhov vertex thiab qhov nruab nrab ntawm nws sab nraud. Hauv rooj plaub ntawm daim duab peb sab equilateral nruab nrab thiab qhov siab coincide nrog ib leeg.
Puas yog nruab nrab perpendicular?
1 Teb. Segment koom ib lub vertex mus rau nruab nrab-point ntawm opposite sab yog hu ua a nruab nrab . Perpendicular los ntawm ib tug vertex mus rau opposite sab yog hu ua altitude. Ib kab uas dhau los ntawm nruab nrab-point ntawm ib ntu thiab yog perpendicular ntawm ntu yog hu ua perpendicular bisector ntawm ntu.
Pom zoo:
Yuav ua li cas koj pom qhov nruab nrab thiab nruab nrab ntawm daim duab peb sab?
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