Video: Cov duab plaub yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv Euclidean dav hlau geometry, a duab plaub yog quadrilateral nrog plaub lub kaum sab xis. Nws kuj tseem tuaj yeem txhais tau tias yog quadrilateral equiangular, vim hais tias equiangular txhais tau tias tag nrho nws cov ces kaum sib npaug (360 ° / 4 = 90 °). Nws tseem tuaj yeem txhais tau tias yog parallelogram uas muaj lub kaum sab xis.
Ntawm no, lub duab plaub yog dab tsi?
Daim duab plaub . ntau A 4-sided flat puab nrog rau sab ncaj uas txhua lub kaum sab hauv yog kaum sab xis (90 °). Tsis tas li ntawd sab nraud yog parallel thiab sib npaug ntev. Piv txwv li: Lub square yog ib hom tshwj xeeb ntawm duab plaub.
Ib yam li ntawd, daim duab plaub txhais li cas? A duab plaub yog ib qho duab nrog plaub sab thiab plaub txoj cai kaum. Lub rect hauv duab plaub los ntawm Latin rectus, uas txhais tau tias "txoj cai" lossis "ncaj." Vim nws cov kaum sab xis, a duab plaub muaj ob sab ncaj.
Kuj tseem yuav paub, qhov piv txwv duab plaub yog dab tsi?
Lub ntsiab txhais ntawm a duab plaub yog plaub-sided daim duab lossis cov duab nrog plaub lub kaum sab xis uas tsis yog square. Ib piv txwv ntawm a duab plaub yog cov duab ntawm ib daim duab 8x10. YourDictionary txhais thiab siv piv txwv.
Cov duab plaub puas yog ib qho zoo li qub?
A tsis tu ncua polygon yuav tsum yog ob qho tib si sib npaug (tag nrho cov sab yog tib qhov ntev) thiab equiangular (tag nrho cov ces kaum ntawm tib qhov ntsuas). A duab plaub yog equiangular. Txawm li cas los xij, a duab plaub tsis tuaj yeem, los ntawm kev txhais, sib npaug. Tag nrho nws sab tsis tuaj yeem yog tib qhov ntev thiab yog li, nws tsis tuaj yeem ua tau tsis tu ncua.
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