Right Angles in Parallelograms Nyob rau hauv parallelogram, yog tias ib lub kaum sab xis yog kaum sab xis, tag nrho plaub lub kaum sab xis yuav tsum yog kaum sab xis. Yog tias daim duab plaub sab muaj ib lub kaum sab xis thiab tsawg kawg yog ib lub kaum sab xis ntawm qhov ntsuas sib txawv, nws tsis yog parallelogram; nws yog ib tug trapezoid.
Puas parallelograms muaj 90 degree kaum?
Ib qho Parallelogram tuaj yeem txhais tau tias yog quadrilateral uas nws ob sab yog tib yam rau ib leeg thiab tag nrho plaub lub kaum sab xis ntawm qhov vertices yog tsis yog 90 degrees lossis txoj caicov ces kaum, quadrilateral hu ua parallelogram. Cov sab nraud ntawm parallelogram kuj sib npaug ntawm qhov ntev.
Puas yog ib qho parallelogram puas muaj cov kaum sab xis qib 4?
Rectangle: Ib qho parallelogram nrog 4 lub kaum sab xis.
Puas yog parallelogram muaj ob lub kaum sab xis?
Ib qho piv txwv yog plaub plaub fab uas muaj 2 khub ntawm ob sab sib luag. Ib daim duab plaub yog ib qho tshwj xeeb parallelogram uas muaj 4 lub kaum sab xis. … Txawm li cas los xij, ib lub trapezoid tuaj yeem muaj ib qho ntawm ob sab txuas rau ob qho tib si rau sab perpendicular mus rau qhov sib npaug uas yuav ua rau ob lub kaum sab xis.
Ua parallelograms sib ntsib ntawm lub kaum sab xis?
No, raws li txoj cai dav dav cov kab pheeb ces kaum ntawm ib qho parallelogram tsis sib cais ntawm txoj cai kaum. Lub ntsiab txhais ntawm ib tug parallelogram yog ib tug plaub-sided polygon nrog opposite sab ua ke thiab sib npaug ntawm qhov ntev.
