Txawm hais tias kab pheeb ces kaum ntawm lub duab plaub tsis yog kab ntawm symmetry, lub duab plaub muaj ib txoj kab ntsug thiab kab rov tav ntawm symmetry, raws li pom saum toj no. … Yeej, ib daim duab muaj taw tes symmetry thaum nws zoo ib yam thaum up-side-down, (rotated 180º), raws li nws ua sab xis-up.
Puas muaj pes tsawg point ntawm symmetry nyob rau hauv ib daim duab plaub?
Rectangle. Ib daim duab plaub muaj ob kab ntawm symmetry. Nws muaj rotational symmetry ntawm kev txiav txim ob.
piv txwv point symmetry yog dab tsi?
Ceeb toom cov ntsiab lus faib ob tsab ntawv ua ob daim duab zoo sib xws, tab sis lawv ntsib cov lus qhia sib txawv. Yog koj taug kev mus rau daim iav thiab kov daim iav nrog koj tus ntiv tes, koj yuav tau ua piv txwv ntawm qhov sib npaug. Txoj cai qhov twg koj tus ntiv tes kov daim iav yog qhov taw tes. Nws zoo li koj txuas nrog koj daim duab.
kab ntawm symmetry nyob rau hauv ib lub duab plaub nyob qhov twg?
Muaj ob kab ntawm symmetry hauv ib daim duab plaub. Thaum ib kab yog kos los ntawm qhov nruab nrab ntawm nws qhov ntev thiab lwm qhov yog kos raws qhov dav (breadth), peb tau txais ob txoj kab sib luag.
Dab tsi yog qhov taw tes pab pawg sib luag ntawm square thiab duab plaub?
Vim li no, lub square muaj C 4 axis ntawm symmetry mus los ntawm nws qhov chaw, thaum lub duab plaub tsis. Lub square yog hais tias muaj "plaub" axis ntawm symmetry, thiab tus nqi ntawm plaub yog hu ua qhov kev txiav txim ntawm lub axis. Ib yam khoom muaj peev xwm muaj ntau tshaj ib yam ntawm tib hom symmetry.
