Cov txheej txheem:

Pyramid - cheb. Kev txhim kho ntawm lub pyramid rau gluing. Ntawv reamers
Pyramid - cheb. Kev txhim kho ntawm lub pyramid rau gluing. Ntawv reamers
Anonim

Rectangle, square, triangle, trapezium thiab lwm yam - geometric duab los ntawm seem ntawm kev tshawb fawb tseeb. Lub pyramid yog polyhedron. Lub hauv paus ntawm daim duab no yog polygon, thiab sab ntsej muag yog daim duab peb sab nrog ib qho vertex, lossis trapezoid. Rau kev nthuav qhia tiav thiab kawm txog txhua yam khoom geometric, mock-ups yog ua. Siv cov khoom sib txawv tshaj plaws los ntawm cov pyramid ua. Qhov saum npoo ntawm daim duab polyhedral, tsim rau ntawm lub dav hlau, hu ua nws txoj kev loj hlob. Cov txheej txheem ntawm kev hloov cov khoom tiaj tus mus rau hauv volumetric polyhedra thiab qee qhov kev paub los ntawm geometry yuav pab tsim cov duab. Nws tsis yog yooj yim los ua reamers los ntawm ntawv los yog cardboard. Koj yuav xav tau lub peev xwm los ua cov duab kos raws li qhov loj me.

khoom siv thiab khoom siv

pyramid swb
pyramid swb

qauv thiab ua tiav ntawm cov duab peb-dimensional geometric ntau yam yog txheej txheem nthuav thiab zoo siab. Los ntawm daim ntawv, koj tuaj yeem ua tus lej loj ntawm ntau yam layouts. Rau kev ua haujlwm koj yuav xav tau:

  • ntawv los yogcardboard;
  • txiab;
  • xaum;
  • ruler;
  • compass;
  • eraser;
  • kawg.

Define parameters

Ua ntej tshaj, cia peb txhais tias lub pyramid yuav yog dab tsi. Txoj kev loj hlob ntawm daim duab no yog lub hauv paus rau kev tsim cov duab peb-dimensional. Kev ua haujlwm yuav xav tau qhov tseeb heev. Yog tias daim duab tsis raug, nws yuav tsis tuaj yeem sib sau ua ib daim duab geometric. Piv txwv tias koj yuav tsum tau ua ib qho kev teeb tsa ntawm lub pyramid tsis tu ncua.

Txhua lub cev geometric muaj qee yam khoom. Daim duab no muaj lub hauv paus polygon tsis tu ncua, thiab nws qhov vertex yog npaj rau hauv nws qhov chaw. Ib daim duab peb sab sib npaug yog xaiv los ua lub hauv paus. Cov xwm txheej no txiav txim lub npe. Sab ntug ntawm lub pyramid yog daim duab peb sab, tus naj npawb ntawm cov nyob ntawm polyhedron xaiv rau lub hauv paus. Hauv qhov no, yuav muaj peb. Nws tseem yog ib qho tseem ceeb kom paub qhov ntev ntawm tag nrho cov constituent qhov chaw uas lub pyramid yuav tsim. Daim ntawv cheb yog ua raws li tag nrho cov ntaub ntawv ntawm daim duab geometric. Cov kev txwv ntawm cov qauv yav tom ntej yog sib tham ua ntej. Kev xaiv cov khoom siv yog nyob ntawm cov ntaub ntawv no.

Pyramid li cas thiaj nthuav tawm?

Lub hauv paus ntawm tus qauv yog ib daim ntawv los yog duab los qhia. Kev ua haujlwm pib nrog kev kos duab pyramid. Daim duab qhia nthuav dav. Ib daim duab tiaj tus ntawm daim ntawv sib raug rau qhov ntev thiab qhov ntev uas tau xaiv ua ntej. Lub pyramid tsis tu ncua muaj ib qho polygon tsis tu ncua raws li nws lub hauv paus, thiab nws qhov siab dhau los ntawm nws qhov chaw. Cia peb pib nrog tus qauv yooj yim. Hauv qhov noyog lub pyramid triangular. Txiav txim siab qhov ntev ntawm cov duab xaiv.

Kev loj hlob ntawm qhov tseeb pyramid
Kev loj hlob ntawm qhov tseeb pyramid

txhawm rau tsim ib lub vas ntawm lub pyramid, lub hauv paus ntawm uas yog daim duab peb sab tsis tu ncua, nyob rau hauv nruab nrab ntawm daim ntawv, siv tus pas ntsuas thiab xaum, kos lub hauv paus ntawm qhov muab qhov ntev. Tom ntej no, rau txhua sab, peb kos lub ntsej muag ntawm lub pyramid - daim duab peb sab. Tam sim no cia peb mus rau kev tsim lawv. Qhov ntev ntawm ob sab ntawm daim duab peb sab ntawm lub lateral nto yog ntsuas nrog ib tug compass. Peb muab txhais ceg ntawm lub compass nyob rau sab saum toj ntawm lub hauv paus kos thiab ua ib tug notch. Peb rov ua qhov kev txiav txim, txav mus rau qhov chaw tom ntej ntawm daim duab peb sab. Qhov kev sib tshuam uas tshwm sim los ntawm qhov kev ua no yuav txiav txim siab qhov vertices ntawm sab ntsej muag ntawm lub pyramid. Peb txuas lawv mus rau lub hauv paus. Peb tau txais ib daim duab ntawm lub pyramid. Rau gluing daim duab peb-dimensional, li qub yog muab rau ntawm ob sab ntawm lub ntsej muag. Tiav me me trapezoids.

Tsim layout

Txiav tawm cov qauv ua tiav raws li cov duab nrog txiab. Maj mam khoov lub scan raws txhua kab. Peb sau lub trapezoid li qub hauv daim duab kom nws lub ntsej muag ze. Lubricate lawv nrog kua nplaum. Tom qab peb caug feeb, cov kua nplaum yuav qhuav. Volumetric daim duab yog npaj txhij.

Sweep of a quadrangular pyramid

Ua ntej, cia peb xav txog seb daim duab geometric zoo li cas, qhov kev teeb tsa uas peb yuav ua. Lub hauv paus ntawm lub pyramid xaiv yog quadrilateral. Lateral ribs - daim duab peb sab. Rau kev ua haujlwm, peb siv tib cov ntaub ntawv thiab cov khoom siv zoo ib yam li hauv cov ntawv dhau los. Daim duab yog ua tiav ntawm daim ntawv nrog ib tug cwj mem. Nyob rau hauv nruab nrab ntawm daim ntawv peb kos ib quadrangle nrog cov xaivparameters.

Tsim lub Pyramid
Tsim lub Pyramid

Faib txhua sab ntawm lub hauv paus hauv ib nrab. Peb kos ib qho perpendicular, uas yuav yog qhov siab ntawm lub ntsej muag daim duab peb sab. Nrog rau lub compass tov sib npaug rau qhov ntev ntawm lub ntsej muag ntawm lub pyramid, peb ua cov ntawv rau ntawm lub perpendiculars, teem nws txhais ceg mus rau sab saum toj ntawm lub hauv paus. Peb txuas ob lub ces kaum ntawm ib sab ntawm lub hauv paus nrog rau qhov tshwm sim ntawm qhov perpendicular. Yog li ntawd, peb tau txais ib lub xwmfab nyob rau hauv nruab nrab ntawm daim duab kos duab, ntawm lub ntsej muag ntawm cov duab peb sab yog kos. Txhawm rau txhim kho tus qauv ntawm lub ntsej muag sab, kos cov khoom siv li qub. Rau txhim khu kev qha fastening, ib tug centimeter-dav strip yog txaus. Lub pyramid npaj txhij rau kev sib sau.

theem kawg ntawm kev ua tiav

Txiav tawm cov qauv uas tshwm sim ntawm daim duab raws qhov contour. Khoov daim ntawv raws cov kab kos. Lub volumetric daim duab yog sau los ntawm gluing. Lubricate lub valve muab nrog cov kua nplaum thiab kho cov qauv uas tshwm sim.

Txoj kev loj hlob ntawm lub quadrangular pyramid
Txoj kev loj hlob ntawm lub quadrangular pyramid

3D layouts ntawm cov duab nyuaj

Tom qab ua tiav tus qauv polyhedron yooj yim, koj tuaj yeem txav mus rau ntau cov duab geometric nyuaj. Txoj kev loj hlob ntawm ib tug truncated pyramid yog ntau nyuaj rau ua. Nws cov hauv paus yog zoo li polyhedra. Lub ntsej muag sab yog trapezoids. Qhov kev ua haujlwm ib ntus yuav zoo ib yam li qhov uas tau ua ib qho yooj yim pyramid. Lub cheb yuav ntau cumbersome. Txhawm rau ua kom tiav daim duab, siv tus cwj mem, lub tshuab raj thiab tus pas ntsuas.

Tsim ib daim duab

Lub pyramid truncated yog nthuav tawm nyob rau hauv ntau theem. Sab ntsej muaglub pyramid truncated yog ib tug trapezoid, thiab cov hauv paus yog zoo li polyhedra. Wb hais tias lawv yog squares. Ntawm ib daim ntawv, peb kos ib lub trapezoid nrog rau qhov ntev. Peb txuas ob sab ntawm daim duab tshwm sim rau kev sib tshuam. Qhov tshwm sim yog daim duab peb sab isosceles. Peb ntsuas nws sab nrog lub compass. Ntawm ib daim ntawv cais peb tsim ib lub voj voog, lub vojvoog uas yuav yog qhov ntsuas qhov deb.

Cov duab pyramid scan
Cov duab pyramid scan

kauj ruam tom ntej yog los tsim cov npoo sab uas lub pyramid truncated muaj. Lub cheb yog ua nyob rau hauv lub voj voog kos. Lub hauv paus qis ntawm lub trapezoid yog ntsuas nrog lub compass. Ntawm lub voj voog peb kos tsib lub ntsiab lus uas txuas cov kab nrog nws qhov chaw. Peb tau txais plaub daim duab peb sab isosceles. Nrog ib tug compass peb ntsuas sab ntawm lub trapezoid kos rau ntawm ib daim ntawv nyias. Qhov kev ncua deb no yog muab tso rau ntawm txhua sab ntawm daim duab peb sab kos. Peb txuas cov ntsiab lus tau. Sab sab ntawm lub trapezoid yog npaj txhij. Nws tseem tsuas yog kos rau sab sauv thiab sab hauv qab ntawm lub pyramid. Hauv qhov no, cov no yog cov zoo li polyhedra - squares. Kos squares rau sab sauv thiab qis hauv paus ntawm thawj trapezoid. Daim duab qhia txhua qhov chaw uas lub pyramid muaj. Lub cheb yuav luag npaj. Nws tseem tsuas yog ua kom tiav cov kev sib txuas ntawm ob sab ntawm lub me me square thiab ib lub ntsej muag ntawm lub trapezoid.

End simulation

Ua ntej gluing daim duab peb-seem, kos duab raws qhov contour raug txiav tawm nrog txiab. Tom ntej no, lub scan yog ua tib zoo khoov raws cov kab kos. Mounting li qub tau ntim rau hauv cov qauv. Lubricate lawv nrog kua nplaum thiabnias rau ntawm ntug ntawm lub pyramid. Cia tus qauv qhuav.

ntawv reamers
ntawv reamers

Ua qauv sib txawv ntawm polyhedrons

Kev ua qauv peb sab ntawm cov duab geometric yog qhov kev paub zoo siab. Yuav kom paub meej nws, koj yuav tsum pib los ntawm kev ua cov scans yooj yim tshaj plaws. Maj mam txav los ntawm cov khoom siv tes ua yooj yim mus rau ntau cov qauv, koj tuaj yeem pib tsim cov qauv tsim tshwj xeeb tshaj plaws.

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