Yog tias ib yam khoom raug muab tso rau pem hauv ntej ntawm daim iav convex uas cuam tshuam lub teeb, daim iav convex yuav tsim ib daim duab ntawm yam khoom. Yog tias paub qhov deb ntawm yam khoom ntawm daim iav convex, koj kos duab ntawm yam khoom li cas? Yuav kom meej qhov no, xav tias ib yam khoom raug muab tso rau pem hauv ntej ntawm daim iav convex. daim iav convex raws li qhia hauv daim duab hauv qab no.
Cov Lus Piav Qhia:
Kab txiv kab ntxwv = daim iav convex
Kab xiav = lub axis tseem ceeb
Xub (ntsuab) = khoom
R = qhov chaw ntawm qhov nkhaus ntawm daim iav convex
f = qhov tsom ntawm daim iav convex
Ib yam khoom duab ntxoov ntxoo tau los ntawm kev kos duab tag nrho cov teeb ci uas hla dhau yam khoom, tab sis qhov no tsis yooj yim vim tias nws yuav tsim ntau kab uas sawv cev rau cov teeb ci. Rau kev yooj yim, ob peb lub teeb ci raug xaiv los sawv cev rau tag nrho cov teeb ci uas hla dhau yam khoom. Vim tias qhov xwm txheej no cuam tshuam nrog kev cuam tshuam ntawm lub teeb , cov cai ntawm kev cuam tshuam yuav tsum tau ua raws li thaum kos duab tsim duab ntxoov ntxoo.
Peb lub teeb ci ntsa iab los yog cov duab tshwj xeeb ntawm cov iav convex
Lub teeb tshwj xeeb 1:
Txoj kab teeb 1 lossis lub teeb ci 1 uas los rau ntawm daim iav convex yog piav qhia tias sib luag rau lub axis tseem ceeb thiab kov qhov kawg sab saud ntawm cov khoom, tom qab ntawd raug cuam tshuam los ntawm daim iav convex qhov twg lub teeb ci ntsa iab zoo li los ntawm qhov chaw tseem ceeb (f)Lub teeb ci ntsa iab thiab lub teeb ci ntsa iab yuav tsum sib ntsib txoj cai ntawm kev cuam tshuam ntawm lub teeb, qhov twg lub kaum sab xis ntawm qhov cuam tshuam yog sib npaug rau lub kaum sab xis ntawm kev cuam tshuam.
Lub teeb tshwj xeeb 2:
Txoj kab teeb 2 lossis lub teeb ci 2 uas los rau ntawm daim iav convex yog piav qhia tias kov ntug sab saud ntawm yam khoom thiab mus rau qhov chaw uas lub axis tseem ceeb sib tshuam nrog daim iav convex, ces lub teeb ci rov qab los. Txoj kab teeb pom kev thiab txoj kab teeb rov qab los yuav tsum ntsib. txoj cai ntawm kev cuam tshuam ntawm lub teeb, qhov twg lub kaum sab xis ntawm qhov cuam tshuam yog sib npaug rau lub kaum sab xis ntawm kev cuam tshuam.
Lub teeb tshwj xeeb 3:
Txoj kab teeb 3 lossis lub teeb 3 uas los rau ntawm daim iav convex yog qhia rau qhov chaw nruab nrab ntawm qhov nkhaus ntawm daim iav (R) thiab kov ntug sab saud ntawm cov khoom, ces raug cuam tshuam los ntawm daim iav convex zoo li lub teeb ci ntsa iab los ntawm qhov chaw nruab nrab ntawm qhov nkhaus. Lub teeb ci ntsa iab sib phim nrog lub teeb ci ntsa iab. Lub teeb ci ntsa iab thiab lub teeb ci ntsa iab yuav tsum sib ntsib txoj cai ntawm kev cuam tshuam ntawm lub teeb, qhov twg lub kaum sab xis ntawm qhov tshwm sim yog sib npaug rau lub kaum sab xis ntawm kev cuam tshuam. Yog tias lub teeb ci ntsa iab sib xws nrog lub teeb ci ntsa iab ces lub teeb ci yuav tsum yog perpendicular (90o) nrog rau qhov chaw iav convex.
Kev tsim duab ntxoov ntxoo (ob lub teeb tshwj xeeb)
Qhov kev tsim ntawm ib yam khoom duab ntxoov ntxoo tuaj yeem piav qhia tau los ntawm kev siv ob lub teeb ci lossis ob lub teeb tshwj xeeb, raws li pom hauv daim duab hauv qab no. Yog tias siv ob lub teeb ci, muaj peb daim duab ntawm qhov kev tsim ntawm duab ntxoov ntxoo.
Cov kab tshwj xeeb 1 thiab 2
Cov kab tshwj xeeb 1 thiab 3
Cov kab tshwj xeeb 2 thiab 3
Daim duab ntawm ib yam khoom siv ob lub teeb ci xwb yuav tsum tau kho kom haum rau qhov deb ntawm daim iav convex. Yog tias qhov deb ntawm daim iav convex zoo li hauv daim duab saum toj no, muaj peb txoj hauv kev los kos duab siv ob lub teeb ci xwb. Yog tias qhov deb ntawm daim iav convex txawv ntawm daim duab saum toj no, piv txwv li, yam khoom nyob nruab nrab ntawm qhov chaw tsom mus rau qhov chaw thiab qhov chaw nruab nrab ntawm qhov nkhaus, ces tej zaum yuav tsis tas yuav muaj peb txoj hauv kev los kos duab, tej zaum tsuas muaj ob txoj hauv kev los kos duab xwb.
Yog koj kos duab ntawm ib yam khoom los ntawm daim iav convex, koj tuaj yeem xaiv ib txoj kev thiab tsis tas yuav siv ob lossis peb txoj kev.
Kev tsim duab (peb lub teeb tshwj xeeb)
Qhov kev tsim ntawm ib yam khoom lub duab ntxoov ntxoo tuaj yeem piav qhia siv peb lub teeb ci lossis peb lub teeb tshwj xeeb, raws li pom hauv daim duab hauv qab no.
Yog tias qhov deb ntawm cov khoom ntawm daim iav convex tsis zoo li hauv daim duab, piv txwv li yog tias cov khoom nyob nruab nrab ntawm daim iav convex thiab qhov chaw tsom, lossis cov khoom nyob nruab nrab ntawm qhov chaw tsom thiab qhov chaw nruab nrab ntawm qhov nkhaus ntawm daim iav convex, ces nws tsis tas yuav yog qhov teeb meem uas kev tsim cov duab ntawm cov khoom tuaj yeem piav qhia siv peb txoj hauv kev lossis peb txoj hauv kev zoo li hauv daim duab. Nws tuaj yeem yog tias tsuas muaj ob txoj hauv kev lossis ob txoj hauv kev los kos cov duab. Thov saib cov piv txwv ntawm cov duab ntawm kev tsim cov duab ntawm cov khoom los ntawm daim iav convex, qhov twg qhov deb ntawm cov khoom ntawm daim iav convex sib txawv, hauv cov ncauj lus ntawm daim duab ntawm daim iav convex.
