Altitude vs Perpendicular Bisector
Altitude thiab Perpendicular Bisector yog ob lub ntsiab lus Geometrical uas yuav tsum nkag siab nrog qee qhov sib txawv. Lawv tsis yog ib qho thiab tib yam hauv kev txhais. Qhov siab yog ib txoj kab ntawm vertex perpendicular mus rau sab nraud. Qhov siab ntawm daim duab peb sab yuav sib tshuam ntawm ib qho chaw. Lub ntsiab lus no yog hu ua orthocenter.
Nws yog qhov nthuav kom nco ntsoov tias muaj cov qauv sib cais los daws qhov siab. Yog tias a, b thiab c sab ntawm daim duab peb sab ces koj tuaj yeem daws ntawm cov ces kaum siv txoj cai Cosine thiab koj tuaj yeem daws qhov siab ntawm daim duab peb sab los ntawm cov qauv ntawm cov haujlwm ntawm daim duab peb sab. Qhov no tuaj yeem ua tiav yog tias koj paub thaj tsam ntawm daim duab peb sab muab.
Yog hais tias thaj tsam ntawm daim duab peb sab yog A, ces qhov ntau qhov siab ntawm daim duab peb sab tuaj yeem pom los ntawm kev siv cov qauv, uas yog, hA=2A / a, h B=2A/b thiab hC=2A/c
Perpendicular bisector muaj tag nrho cov ntsiab lus sib txawv. Perpendicular bisector ntawm daim duab peb sab yog ib qho perpendicular uas hla los ntawm nruab nrab ntawm sab ntawm daim duab peb sab. Qhov no yog qhov sib txawv tseem ceeb ntawm qhov siab thiab perpendicular bisector. Nws yog qhov nthuav kom nco ntsoov tias vertex yuav tsum tau coj mus rau hauv tus account thaum nrhiav qhov siab tshaj qhov nruab nrab ntawm sab yog yuav tsum tau coj mus rau hauv kev txiav txim siab thaum nrhiav lub perpendicular bisector.
Peb qhov kev sib txuas ntawm ob sab yog pom nyob rau hauv kev sib tw kom paub qhov kev sib tshuam ntawm qhov chaw ntawm lub voj voog ncig ntawm daim duab peb sab. Qhov no yog lub hom phiaj ntawm kev paub txog cov perpendicular bisectors. Qhov taw tes ntawm kev sib tshuam no hu ua lub voj voog.
Nws tseem ceeb heev tshwj xeeb tshaj yog rau cov tub ntxhais kawm ntawm geometry kom paub cov txheej txheem hauv kev txiav txim siab qhov siab thiab qhov perpendicular bisector. Cov qauv sib txawv yog siv los ntawm tus menyuam kawm ntawv los nrhiav lawv.
