Dab tsi yog qhov kev xav ntawm daim duab peb sab?
Dab tsi yog qhov kev xav ntawm daim duab peb sab?

Video: Dab tsi yog qhov kev xav ntawm daim duab peb sab?

Video: Dab tsi yog qhov kev xav ntawm daim duab peb sab?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Kaum ib hlis
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Reflection Daim duab peb sab . Cov daim duab peb sab tau los ntawm xav txog cov vertices ntawm kev siv daim duab peb sab hais txog qhov opposite sab yog hu ua daim duab peb sab reflection (Grinberg 2003). Nws yog foundations rau qhov siv daim duab peb sab nrog lub orthocenter ua tus saib, thiab muaj trilinear vertex matrix. (1) Nws sab ntev yog.

Xav txog qhov no, koj xav li cas txog daim duab peb sab hauv Y axis?

Thaum koj xav txog ib point hla lub y - axis , cov y - koom tes tseem zoo li qub, tab sis x- koom tes hloov mus rau hauv nws qhov opposite (nws lub cim yog hloov). Daim ntawv ceeb toom tias B yog 5 kab rov tav units mus rau sab xis ntawm lub y - axis , thiab B' yog 5 kab rov tav units rau sab laug ntawm lub y - axis . tus y - axis yog qhov point (-x, y ).

Ib yam li ntawd, tus qauv rau kev xav ntawm y axis yog dab tsi? Kev xav hauv y - axis : Txoj cai rau a kev xav ntawm y - axis yog (x, y ) →(-x, y ).

Kuj Paub, dab tsi yog qhov kev xav ntawm lub cev?

Kev xav - ntawm ib tug polygon A transformation qhov twg txhua lub ntsiab lus hauv a puab tshwm ntawm qhov sib npaug ntawm qhov sib npaug ntawm sab nraud ntawm ib kab uas tau muab - kab ntawm xav txog.

Yuav ua li cas rau koj nrhiav thaj tsam ntawm daim duab peb sab?

Rau nrhiav tus cheeb tsam ntawm a daim duab peb sab , muab lub hauv paus los ntawm qhov siab, thiab muab faib los ntawm 2. Kev faib los ntawm 2 los ntawm qhov tseeb tias ib qho parallelogram tuaj yeem muab faib ua 2 daim duab peb sab . Piv txwv li, nyob rau hauv daim duab mus rau sab laug, lub cheeb tsam ntawm txhua tus daim duab peb sab yog sib npaug rau ib nrab ntawm cheeb tsam ntawm parallelogram.

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