Thaum twg thaj chaw sib npaug ib puag ncig?

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Thaum twg thaj chaw sib npaug ib puag ncig?
Thaum twg thaj chaw sib npaug ib puag ncig?

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Video: Thaum twg thaj chaw sib npaug ib puag ncig?
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Anonim

Ib qhov sib npaug ntawm ob sab (lossis cov duab zoo meej)yog ib qho uas nws cheeb tsam sib npaug rau nws thaj tsam. Piv txwv li, ib lub kaum sab xis nrog sab 5, 12 thiab 13 muaj thaj tsam thiab ib puag ncig ob leeg muaj qhov tsis muaj tus lej ntawm 30.

Puas ib cheeb tsam sib npaug rau cheeb tsam?

Lub ib puag ncig yuav ib txwm sib npaug, vim qhov ntev yog muab faib ua 2, ua kom sib npaug, thiab ntxiv rau qhov dav uas tau muab faib ua 2, kuj ua rau nws txawm. Tab sis yog hais tias ob qho tib si qhov ntev thiab qhov dav yog khib, ces cheeb tsam yuav khib, txhais tau hais tias nws yog tsis yooj yim sua rau lub perimeter yuav zoo ib yam li cheeb tsam.

thaj chaw cuam tshuam li cas rau ib puag ncig?

Lub ib puag ncig yog qhov kev ncua deb ntawm cov duab. Lub cheeb tsam yog qhov amout ntawm qhov chaw nyob rau hauv cov duab tus qauv.

Puas cov duab nrog tib cheeb tsam muaj tib lub perimeter?

Qhia cov tub ntxhais kawm tias cov duab plaub muaj tib cheeb tsam, tab sis muaj qhov sib txawv. Peb tau saib ob daim duab plaub nrog thaj tsam tib yam, thiab tham txog thaj tsam ntawm cov duab ntawd. Peb pom tau tias cov duab plaub uas muaj tib thaj chaw tsis tas yuav muaj tib qhov ib puag ncig

Puas yog ib puag ncig tsawg dua thaj chaw?

Lub cheeb tsam ib txwm loj dua tsuas yog ib qho(Shape G). … Cov cheeb tsam thiab ib puag ncig yog tib yam. Tib yam tshwm sim yog tias koj muaj ib daim duab plaub uas muaj qhov ntev ntawm 6 thiab qhov dav ntawm 3. Table 3 (lawv tsis tau muab lawv lub tsev kawm ntawv) saib ntawm kev nrhiav cov duab uas muaj ib puag ncig tus lej ob zaug hauv cheeb tsam.

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