Ib daim duab plaub yog parallelogram nrog plaub lub kaum sab xis, yog li tag nrho cov duab plaub kuj yog parallelograms thiab quadrilaterals.
Puas lub duab plaub puas muaj plaub lub kaum sab xis?
Ib daim duab plaub yog plaub fab nrog 4 txoj cai kaum(90 °). Nyob rau hauv ib lub duab plaub, ob khub ntawm opposite sab yog parallel thiab sib npaug ntawm qhov ntev. Cov khoom ntawm cov duab plaub: Txhua lub kaum sab xis yog kaum sab xis.
Lub kaum sab xis muaj pes tsawg tus duab plaub?
a quadrilateral nrog plaub txoj cai kaum. ib quadrilateral qhov twg ob kab pheeb ces kaum sib npaug ntawm qhov ntev thiab bisect ib leeg.
Puas cov duab plaub tag nrho muaj cov kaum sab xis?
Yes, tag nrho cov duab plaub muaj kaum sab xis.
Dab tsi yog qhov zoo li 4 lub kaum sab xis?
Ib daim duab plaub yog ib lub plaub fab uas muaj 4 lub kaum sab xis. Ib daim duab nrog plaub sab ntawm qhov sib npaug. Cov duab muaj ob pawg ntawm qhov sib npaug sab thiab muaj plaub lub kaum sab xis. Daim duab plaub sab.