Ib lub rhombus zoo li lub kaum sab xis, thiab a rhomboid zoo li ib daim duab plaub. Cov squares thiab duab plaub ntawm ib qho parallelogram tsim plaub lub kaum sab xis.
Puas yog lub rhombus ib daim duab plaub?
Lub dual polygon ntawm lub rhombus yog ib lub duab plaub: Lub rhombus muaj txhua sab sib npaug, thaum lub duab plaub muaj tag nrho cov kaum sib npaug. Lub rhombus muaj lub kaum sab xis sib npaug, thaum lub duab plaub muaj qhov sib npaug sib npaug. … Cov kab pheeb ces kaum ntawm lub rhombus sib tshuam ntawm cov ces kaum sib npaug, hos cov kab pheeb ces kaum ntawm ib daim duab plaub sib npaug ntawm qhov ntev.
Puas yog parallelogram ib daim duab plaub?
Vim tias nws muaj ob pawg ntawm cov kab sib dhos thiab ob khub ntawm cov lus rov qab uas sib koom ua ke, ib daim duab plaub muaj tag nrho cov khoom ntawm ib qho parallelogram. Tias yog vim li cas ib daim duab plaub ib txwm yog parallelogram.
Puas yog daim duab tilted tseem yog duab plaub?
Yes, nws tseem yog duab plaub.
Puas yog trapezoid ib daim duab plaub?
Txoj kev ntawm lub trapezoid
Ib lub trapezoid tuaj yeem yog ib daim duab plaub yog tias ob khub ntawm nws sab nraud yog sib npaug; nws sab nraud yog qhov sib npaug ntawm qhov ntev thiab nyob ntawm txoj cai kaum rau ib leeg.
