Rau daim duab tuav ua tes, yuav luag txhua cov ntaub ntawv yuav haum, los ntawm cov hlaws dai rau cov khaub ncaws qub thiab cov thawv khau. Qhov tseem ceeb hauv qhov no yog koj lub tswv yim thiab qhov loj ntawm daim duab.
Cov Lus Qhia
Kauj ruam 1
Txiav ob daim duab plaub tawm ntawm daim duab los qhia kom haum rau koj daim duab. Yog tias daim duab no muaj qhov sib txawv, hloov cov duab los qhia qhov tseeb, tab sis nws zoo tshaj rau kev sim nrog cov duab yooj yim thawj zaug.
Kauj ruam 2
Teeb ib lub duab plaub ib sab, thiab nyob rau txhua lub ces kaum ntawm ob daim thij ob, tsim cov kab nrig. Vim tias txhua tus neeg thawj cov ces kaum yeej ncaj, txhua yim ntawm cov ces kaum tshiab yuav tsum yog 45 °.
Kauj ruam 3
Los ntawm txhua sab ntawm tus duab plaub, teem ib sab tuab ntawm yav tom ntej thav duab thiab muab cov ntsiab lus. Txuas lawv los ua cov duab plaub nyob rau hauv daim duab plaub. Lub ces kaum ntawm cov duab tshiab yuav tsum mus ua ke nrog lub bisectors.
Kauj ruam 4
Txiav tawm cov trapezoids uas ua los ntawm cov kev ntsuas no. Teeb cov duab plaub rau seem.
Kauj ruam 5
Sheathe cardboard trapeze nrog ntaub, ua cov khoom siv los ntawm cov tawv, yas, hlaws dai, pleev xim rau xim - hauv ib lo lus, ua rau lawv zoo nkauj. Ua ntej tsim txhua yam kev kos duab ncaj qha rau ntawm lawv, kos duab kos duab kos ntawm pob ntawv. Koj yuav nkag siab tam sim ntawd yuav ua li cas thiab ua dab tsi, nyob rau hauv kev txiav txim dab tsi rau kua nplaum thiab xaws.
Kauj Ruam 6
Txheeb nrog qhov loj ntawm koj daim duab ua nrog ib daig ntawm iav tiav. Txuas nws rau qhov teeb tsa ib sab (thawj zaug) ntawm cov duab los qhia, txuas daim trapezoid rau saum. Txuas cov qauv nrog kua nplaum lossis cov ntawv tshaj xo tshwj xeeb ntawm peb sab (duab yuav muab tso rau saum lossis hauv qab). Siv ib qho duab ci me me rau sab nraub qaum, khoov rau sab sauv nqaim li 1 cm txhawm rau muab cov yees duab tso rau saum rooj.
