Thaum khoov cov kav dej lossis cov raj, nws yog ib qho tseem ceeb los ntsuas ntsuas kom raug. Ib qho yuam kev ntawm theem no yuav ua rau cov yeeb nkab khoov lossis raj tsis raug, thiab feem ntau, yog qhov xwm txheej tsis hloov pauv. Hauv lwm qhov xwm txheej, nws siv sijhawm ntau, thiab tuaj yeem hloov pauv koj cov yeeb nkab lossis raj mus tas li.
Cov kauj ruam
Kauj Ruam 1. Kwv yees tag nrho ntev ntawm cov yeeb nkab
Nyob ntawm qhov ntev ntawm qhov khoov thiab qhov ntev ntawm qhov chaw nruab nrab ntawm lawv, txiav txim siab qhov ntev ntawm cov yeeb nkab lossis tubing koj xav tau. Ua kom ntseeg tau tias ob peb ntiv tes (lossis centimeters) ntawm cov npoo muaj kom haum rau qhov yuam kev hauv kev suav lossis txiav txim.
Kauj Ruam 2. Ntsuas qhov nrug rau thawj khoov
Los ntawm ib kawg ntawm lub raj, khij lub ntsiab lus rau thawj khoov. Ntawm no, koj yuav tsum ua tib zoo kos cim pib thiab qhov kawg ntawm qhov khoov. Koj kuj yuav tsum ntsuas qhov nrug nruab nrab ntawm khoov.
Kauj Ruam 3. Ntsuas qhov nrug rau qhov khoov zaum ob
Rov ua dua cov kauj ruam dhau los, tab sis siv lub vertex ntawm thawj khoov raws li qhov siv/ pib taw tes tsis yog qhov kawg ntawm lub raj lossis yeeb nkab. Lub vertex yog lub ntsiab lus tseeb uas ob txhais ceg ntawm lub kaum sab xis sib tshuam.
Xwb, koj tuaj yeem siv thawj qhov taw qhia (qhov kawg ntawm lub raj) txhawm rau ntsuas qhov nrug rau txhua qhov khoov
Kauj Ruam 4. Ntsuas ntau khoov
Rov ua cov kauj ruam dhau los txhawm rau ntsuas ntau txoj kev khoov. Nco ntsoov kos lub cim qhov tseeb thaum koj mus.
Kauj Ruam 5. Ntsuas qhov khoov rov qab
Rov ua cov kauj ruam 2, tab sis khij qhov kev taw qhia ntawm khoov. Nws yog tib txoj kev tshwj tsis yog tias cov kev taw qhia ntawm khoov sib txawv. Koj kuj yuav tsum txiav tawm qhov tau txais.
Kauj Ruam 6. Them nyiaj rov qab rau lub caij nplooj ntoo hlav thaum ntsuas
Txhua lub raj thiab cov kav dej, tsis hais txog ntawm cov khoom siv, ntsib qee qhov caij nplooj ntoo hlav rov qab los. Nws yog nyob ntawm cov khoom siv, lub kaum sab xis ntawm khoov, thiab lub vojvoog ntawm khoov. Qhov no tuaj yeem raug them nyiaj los ntawm kev siv ob txoj hauv kev:
- Nrog kev paub dhau los thiab txoj hauv kev raug, koj tuaj yeem kwv yees tus nqi ntawm lub caij nplooj ntoo hlav rov qab thiab hla khoov lub raj; los yog
- Koj tuaj yeem tos kom lub caij nplooj ntoo hlav rov tshwm sim, ntsuas lub kaum sab xis thiab tom qab ntawd khoov lub raj kom haum.
Lub tswv yim
- Siv ib qho seem ntawm cov yeeb nkab lossis tubing los tshuaj xyuas koj qhov kev suav thiab cov khoom tsim tawm.
- Siv cov mis kom raug los xam qhov puag ncig ntawm qhov khoov. Piv txwv, cov mis siv thaum ua 90˚ khoov yog: Kab ncig = (pi*2*r) / (360/90).
- Thaum khoov, coj mus rau hauv tus account lub peev xwm ntawm cov khoom siv khoov thiab txhawb nqa khoov. Nws yuav tsum tsis txhob tawg thaum lub sijhawm txheej txheem lossis tom qab thov.
- Txawm hais tias muaj txiaj ntsig, yuav tsum tau txiav txim siab tsuas yog thaum xam cov kab rov qab. Tsis txhob siv lwm yam.
Lus ceeb toom
- Nyeem phau ntawv kom zoo ua ntej siv cov cuab yeej.
- Tsis txhob sim siv lub tshuab yam tsis muaj kev taw qhia raug.
- Xyuas kom koj muaj lub cuab yeej zoo nrog cov iav kev nyab xeeb.
