Ib kab los ntawm ib sab kom txhua sab yog daim iav. Thaum cov duab yog folded nyob rau hauv ib nrab raws li axis ntawm symmetry, ces ob halves match up.
Koj txhais li cas los ntawm axis ntawm symmetry?
Lub axis ntawm symmetry ntawm parabola yog kab ntsug uas faib cov parabola rau hauv ob qhov sib xyaw ua ke. Lub axis ntawm symmetry ib txwm dhau los ntawm vertex ntawm parabola.
Dab tsi yog qhov piv txwv ntawm symmetry?
Ob sab ntawm daim duab ntawm ob sab ntawm lub axis ntawm symmetry zoo li daim iav duab ntawm ib leeg. Piv txwv li: Qhov no yog daim duab ntawm parabola y=x2 – 4x + 2 ua ke nrog nws cov axis ntawm symmetry x=2. Lub axis ntawm symmetry yog kab liab ntsug.
Muaj pes tsawg hom axis ntawm symmetry muaj?
Ib kab uas faib lossis faib ib qho khoom rau hauv ob qhov sib npaug, ob qho tib si ntawm cov duab iav ntawm ib leeg yog hu ua axis ntawm symmetry. Cov kab no ntawm axis faib cov khoom yuav yog ib qho ntawm peb hom uas yog: kab rov tav (x-axis), ntsug (y-axis), lossis inclined axis.
Vim li cas lub square thiaj muaj 4 kab sib luag?
Rau lub xwmfab, nws tuaj yeem folded hauv ib nrab ntawm kab pheeb ces kaum, kab rov tav ntu uas txiav cov xwmfab hauv ib nrab, lossis ntu ntsug uas txiav cov square hauv ib nrab. Yog li lub square muaj plaub kab ntawm symmetry.
