Ua si nrog tus me nyuam ntau yam duab ntawm cov duab, koj pab nws tsim kev xav thiab kev xav. Nws pib to taub qhov square, round, cubic, spherical, thiab txhais tau tias thiab nws tau yooj yim xav txog nws hauv nws lub taub hau. Txawm rau cov tub kawm ntawv hauv tsev kawm ntawv hauv qhov kev kawm ntawm geometry, cov xibfwb qhia txhua zaus cov duab ntawm cov duab, uas pab txhawb qhov zoo tshaj qhov qub ntawm geometric theorems thiab axioms. Thiab, tej zaum, qhov nyuaj thiab nyuaj-rau-pronounce lo lus rau ib tug me nyuam yog "parallelepiped". Yuav kom txawj siv cov duab no thiab to taub nws cov qauv, peb xav hais tias koj thiab koj tus menyuam ua ib daim ntawv sib dhos nrog lawv tus kheej.
Ua li no koj yuav tsum tau:
- tuab daim ntawv (tab sis tsis muaj duab los tau, txwv tsis pub tus me nyuam yuav ua qhov teeb meem zoo li no), koj tuaj yeem siv ib daim ntawv los ntawm phau ntawv;
- mem hluav;
- tus kav;
- txiab;
- kua nplaum PVA.
Yuav kom nkag siab tias yuav ua li cas thiaj ua tau daim ntawv qhia ua ke, koj yuav tsum nco qab tias nws zoo li cas thiab nws yog dabtsi. Daim duab no muaj 6 ntsej muag, txhua tus yog ib tug duab plaub. Vim li no, tus luam theej duab yuav tsum muaj 6 lub duab sib txuas hauv tib lub dav hlau.
1. Raws li tau zoo raws li cov duab volumetric, qhov sib txuam nrog qhov ntev, dav thiab qhov siab. Nws yog los ntawm lawv cov nuj nqis tias qhov loj ntawm qhov ntawv pov thawj yuav nyob ntawm seb. Txhais qhov ntau ntau thiab sau lawv.
2. Peb npaj mus kos ib daim duab ntawm ib daim duab uas tig mus rau ntawm daim ntawv. Nco ntsoov tias daim ntawv yuav tsum tsis txhob thim, nws yuav yooj yim tau txais ntub los ntawm kua nplaum thiab warped, ces daim duab tsis tig tawm txawm, thiab daim tawv thawv excessively yuav tsis khoov zoo thiab yuav tawg rau ntawm ob sab.
3. Kos ib kab rov tav, qhov ntev ntawm qhov sib npaug ntawm qhov dav thiab qhov siab, multiplied los ntawm ob. Tom qab ntawd txhua qhov kawg ntawm txoj kab peb txo cov perpendicular sib npaug rau qhov ntev ntawm txoj kev xav uas luag muaj. Nruab nrab ntawm lawv kos ib kab mus tib seem rau thawj.
4. Tam sim no, los ntawm cov ces kaum sab xis, peb plot qhov siab ntawm lub parallelogram, ces lub dav. Ces rov rau siab, thiab rov dav dua. Los ntawm cov ntsiab lus tau txais, kos kab sab nraud sab nraud, uas yuav sib npaug zos rau qhov ntev ntawm txoj kev sib tw. Yog li ntawd peb tau txais 4 lub ntsej muag ntawm cov duab. Muaj 2 ntau sab laug.
5. Sab saum toj ob duab plaub sab xis, peb ntxiv ob ntxiv rau hauv qab thiab saum toj saud. Hauv qhov no, los ntawm ob lub cim ntawm sab xis, uas peb tau ua nyob rau hauv kauj ruam 4, kos ib sab zuj zus mus rau qhov siab ntawm daim duab. Rov qab tib yam los ntawm ob lub cim. Peb xa cov ntawv kab mob los ntawm ib lub voj voog sib luag mus rau lub dav ntawm lub pob txha. Qhov zoo sib xws, peb tsim cov duab plaub sab nraud rau sab nraud.
6. Txhawm rau kom yooj yim rau cov kua nplaum los ntawm daim ntawv, ntxiv rau "tsho" rau ntawm daim duab, raws li pom hauv daim duab. Nws yog qhov tseem ceeb los ua kom lawv npuaj ntawm qhov chaw (45 degrees), yog tias thaum nkawd tsis zoo lawm.
Yog li ntawd, qhov luam tawm ntawm daim ntawv no yog npaj txhij. Nws yog ib qho tseem ceeb uas tag nrho cov ntsiab lus ntawm cov duab yog ntsuas thiab nruj me ntsis ntsuas, txwv tsis pub tus naj npawb tsis lo ua ke tusyees thiab yuav yog ib tus nkaus.
7. Txiav cov khoom ua haujlwm thiab khoov nws txhua kab kom peb cov kov, thiab saum toj thiab hauv qab voos ua qhov "hauv qab" thiab "npog" ntawm daim duab.
8. Nrov cov "tis" ntxiv nrog cov kua nplaum thiab sau cov txheej txheem los ntawm qhov kom rov qab rau hauv. Cia peb tos kom txog thaum cov kua nplaum.
Yog tias koj tau ua cov khoom siv ntawm daim duab no, koj tuaj yeem sau ntxiv rau hauv daim ntawv qhia, uas nws muaj cov pob zeb diamonds.
- Los ntawm cov duab thawj zaug, kos daim duab, raws li qhia hauv daim duab. Raws li koj tau pom, tag nrho cov ntsej muag ntawm lub pob inclined parallelepiped yog tib yam thiab tag nrho cov sab ntawm diamonds yog sib npaug.
- Ntxiv rau daim duab ntxiv tis rau kev ua ub no.
- Maj mam tuaj tos cov duab.
Parallelepiped - daim duab yooj yim geometric yooj yim, mastering uas koj tuaj yeem mus rau lwm tus - los tsim ib lub hauv paus ntawm cardboard los yog ntawv, piv txwv li, icosahedron .