A quadrilateral yog polygon nrog plaub sab. Yog li ib lub quadrilateral tsis tu ncua yog cov duab uas muaj plaub sab sib npaug, nrog rau tag nrho cov kaum sab hauv sab hauv lub kaum sab xis Qhov kev ntsuas ntawm lub kaum sab nrauv ntawm lub vertex tsis cuam tshuam los ntawm qhov twg yog txuas ntxiv : ob sab nrauv cov ces kaum uas tuaj yeem tsim ntawm ib qho vertex los ntawm kev sib txuas ntawm ib sab los yog lwm qhov yog cov kaum sab xis thiab yog li sib npaug. https://en.wikipedia.org › wiki › Internal_and_external_angles
kaum sab hauv thiab sab nraud - Wikipedia
sib npaug. Lub npe ntau dua rau cov duab no yog square!
Ib qho piv txwv ntawm ib qho plaub ntug tsis tu ncua yog dab tsi?
A quadrilateral yog polygon nrog plaub sab. Qee qhov piv txwv ntawm quadrilaterals yog duab plaub, square, rhombus, parallelogram, trapezium thiab lwm yam.… Yog li ntawd, ib lub xwmfab yog ib lub quadrilateral tsis tu ncua. Lub rhombus yog quadrilateral nrog tag nrho cov sab sib npaug thiab nws cov kab pheeb ces kaum bisect ib leeg, tab sis tag nrho nws cov ces kaum tsis sib npaug.
Puas muaj pes tsawg lub quadrilaterals muaj?
A quadrilateral yog polygon nrog plaub sab. Muaj xya quadrilaterals, muaj qee leej paub tseeb rau koj, thiab qee qhov uas yuav tsis paub. Tshawb xyuas cov ntsiab lus hauv qab no thiab cov tsev neeg plaub fab hauv daim duab hauv qab no.
Vim li cas square thiaj hu ua quadrilateral?
Square yog quadrilateral nrog plaub sab sib npaug thiab kaum. Nws kuj yog ib qho plaub ntug tsis tu ncua raws li ob sab thiab kaum sib npaug. Ib yam li daim duab plaub, ib lub xwmfab muaj plaub lub kaum sab xis ntawm 90 ° txhua.
Puas yog lub rhombus tsis xwm yeem quadrilateral?
Irregular quadrilaterals yog: duab plaub, trapezoid, parallelogram, kite, thiab rhombus. … Lawv yog cov symmetrical, tab sis tsis tas yuav tsum muaj ob sab los yog lub kaum sab xis. Tsis txhob poob siab, txawm li cas los xij, vim qee qhov ntawm lawv tawm los rau cov qauv hauv cheeb tsam, ib yam li cov square ua.
