Puas yog qhov kev hloov pauv yog ib qho kev tawm dag zog?
Puas yog qhov kev hloov pauv yog ib qho kev tawm dag zog?

Video: Puas yog qhov kev hloov pauv yog ib qho kev tawm dag zog?

Video: Puas yog qhov kev hloov pauv yog ib qho kev tawm dag zog?
Video: 7 txoj kev khwv nyiaj, yuav tau paub los mus hloov yus lub neej 2024, Kaum ib hlis
Anonim

Rigid zog yog lwm lub npe hu ua a nruj transformation thiab tshwm sim thaum ib qho taw tes lossis khoom txav mus, tab sis qhov loj thiab cov duab tseem zoo ib yam. Qhov no txawv ntawm cov tsis- nruj zog , zoo li dilation, qhov loj ntawm cov khoom tuaj yeem nce lossis txo.

Ua raws li qhov no hauv kev txiav txim siab, koj yuav qhia li cas yog tias kev hloov pauv yog ib qho kev sib tw nruj?

A nruj zog yog a kev hloov pauv (ntawm lub dav hlau) uas "preserves nrug". Hauv lwm lo lus, yog A yog xa / maped / hloov mus rau A' thiab B xa mus rau B', ces qhov kev ncua deb ntawm A thiab B (qhov ntev ntawm ntu AB) yog tib yam li qhov kev ncua deb ntawm A' thiab B' (qhov ntev ntawm ntu A 'B').

Tsis tas li ntawd, qhov kev hloov pauv twg yog daim ntawv ntawm cov lus tsa suab thiab swb ib daim duab? txhais lus

Tib neeg kuj nug, puas yog txhua qhov kev txhais lus suav hais tias yog ib qho kev sib tw nruj?

b) tus txheeb ze txoj hauj lwm ntawm cov ntsiab lus nyob twj ywm tib yam. Muaj plaub hom nruj zog tias peb yuav xav txog : txhais lus , rotation, reflection, thiab glide reflection. Hauv ib txhais lus , txhua yam yog txav los ntawm tib tus nqi thiab nyob rau hauv tib txoj kev. Txhua txhais lus muaj kev taw qhia thiab kev ncua deb.

Puas yog qhov dilation yog ib qho piv txwv ntawm kev ua kom nruj?

A dilation tsis suav tias yog ib nruj zog vim nws tsis khaws qhov kev ncua deb ntawm cov ntsiab lus. Hauv qab a dilation qhov twg, thiab,, uas txhais tau tias yuav tsum muaj qhov ntev ntau dua lossis tsawg dua. Nyob rau hauv daim duab hauv qab no, yog cov duab ntawm nyob rau hauv ib qho kev hloov pauv ntawm lub dav hlau.

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