3 Txoj Hauv Kev Nrhiav Kev Ntsuas Ntawm Peb Lub Ntsej Muag ntawm Ib Daim Duab Peb Hlis

Cov txheej txheem:

3 Txoj Hauv Kev Nrhiav Kev Ntsuas Ntawm Peb Lub Ntsej Muag ntawm Ib Daim Duab Peb Hlis
3 Txoj Hauv Kev Nrhiav Kev Ntsuas Ntawm Peb Lub Ntsej Muag ntawm Ib Daim Duab Peb Hlis

Video: 3 Txoj Hauv Kev Nrhiav Kev Ntsuas Ntawm Peb Lub Ntsej Muag ntawm Ib Daim Duab Peb Hlis

Video: 3 Txoj Hauv Kev Nrhiav Kev Ntsuas Ntawm Peb Lub Ntsej Muag ntawm Ib Daim Duab Peb Hlis
Video: leej twg tej ntxhai - Mang Vang [ Official MV ] 2024, Kaum ib hlis
Anonim

Tsuav koj paub ntsuas ntawm lwm ob lub kaum, nrhiav lub kaum peb ntawm daim duab peb sab yog yooj yim. Koj tsuas yog xav rho qhov sib npaug ntawm ob lub kaum sab xis ntawm 180 degrees. Txawm li cas los xij, kuj tseem muaj lwm txoj hauv kev uas koj tuaj yeem siv los nrhiav lub kaum sab xis ntawm daim duab peb sab yog tias cov teeb meem zoo li txawv me ntsis li ib txwm. Yog tias koj xav paub yuav nrhiav lub kaum peb ntawm daim duab peb sab, ua raws li phau ntawv qhia hauv qab no.

Kauj ruam

Txoj Kev 1 ntawm 3: Siv Kev Ntsuas Ntawm Lwm Lub Kaum Ob

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 1
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 1

Kauj Ruam 1. Ntxiv ob lub kaum uas paub

Ib qhov tseeb koj yuav tsum paub yog tias qhov sib npaug ntawm peb lub kaum sab xis ntawm ib daim duab peb sab yog ib txwm 180 degrees. Yog li, yog tias koj twb paub qhov ntsuas ntawm ob lub ces kaum ntawm daim duab peb sab, nrhiav lub kaum peb yuav yooj yim li ua yooj yim ntxiv thiab rho tawm cov teeb meem. Ua ntej, ntxiv ob txoj kev ntsuas uas koj twb paub lawm. Piv txwv li, ob lub kaum paub paub ntsuas 80 thiab 65 degrees. Ntxiv ob qho ua ke (80+65), thiab koj tau txais 145 degrees.

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 2
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 2

Kauj Ruam 2. Faib tus lej ntawd 180

Qhov sib npaug ntawm peb lub kaum sab xis ntawm daim duab peb sab yog ib txwm 180 degrees. Yog li, lub kaum peb yuav tsum yog 180 thaum ntxiv rau qhov suav ntawm ob qhov kev ntsuas ntsuas ntawm lub kaum sab xis. Hauv qhov piv txwv saum toj no, qhov no txhais tau tias 180-154 = 35.

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis 3
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis 3

Kauj Ruam 3. Sau koj cov lus teb

Tam sim no koj muaj cov lus teb rau lub kaum peb (hauv qhov piv txwv 35 degrees). Yog koj tseem tsis ntseeg, saib koj tus kheej. Ntxiv peb lub kaum ua ke, thiab koj yuav tsum tau txais txiaj ntsig ntawm 180. Yog tias koj tsis ua, koj qhov kev suav tsis raug. Rau qhov piv txwv no, 80+65+35 = 180. Yog nws raug, nws txhais tau tias koj tau daws qhov teeb meem.

Txoj Kev 2 ntawm 3: Siv Cov Qauv

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 4
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 4

Kauj Ruam 1. Sau qhov teeb meem

Qee zaum, qhov loj ntawm lub kaum ntse ntse uas twb muaj lawm tau qhia hauv daim ntawv sib txawv. Cia peb coj qhov piv txwv no: "Nrhiav lub kaum" x "ntawm daim duab peb sab yog tias peb lub kaum sab xis ntsuas" x "," 2x ", thiab 24, feem." Ua ntej tshaj, sau qhov teeb meem.

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis 5
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis 5

Kauj Ruam 2. Ntxiv txhua qhov ntsuas ntsuas

Lub hauv paus ntsiab lus koj yuav tsum nco ntsoov tseem zoo ib yam. Yog li, thawj zaug ntxiv peb lub kaum hauv qhov teeb meem, uas yog "x+2x+24 = 3x+24".

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 6
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 6

Kauj Ruam 3. Sib faib cov kaum ntawm 180

Tam sim no, sib txawv tus lej ntawd 180 degrees los nrhiav x thiab nrhiav cov lus teb rau qhov teeb meem. Nco ntsoov tias koj xaus qhov kev sib npaug sib npaug rau xoom. Nov yog qhov nws sau:

  • 180- (4x+24) = 0
  • 180-3x -24 = 0
  • 156-3x = 0
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis 7
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis 7

Kauj Ruam 4. Nrhiav tus nqi x

Tam sim no, txav qhov sib txawv mus rau lwm sab ntawm qhov sib npaug, thiab koj yuav tau txais 156 = 3x. Tom qab ntawd, faib qhov sib npaug los ntawm 3, yog li koj tau txais x = 52. Qhov no txhais tau tias kev ntsuas ntawm lub kaum sab xis qhia hauv x yog 52 degrees. Lwm lub kaum sab xis, qhia hauv 2x yog 52 degrees zaus 2, uas yog 104 degrees.

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 8
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 8

Kauj Ruam 5. Txheeb xyuas koj cov txiaj ntsig

Yog tias koj xav kom ntseeg tau tias koj cov lus teb raug, tsuas yog ntxiv peb qhov kev ntsuas uas koj twb pom cov lus teb rau. Yog qhov txiaj ntsig yog 180, nws txhais tau tias koj cov lus teb raug lawm. Rau qhov piv txwv no, 52+104+24 = 180.

Txoj Kev 3 ntawm 3: Siv Lwm Txoj Kev

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 9
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 9

Kauj Ruam 1. Nrhiav cov ces kaum ntawm isosceles daim duab peb sab

Ib daim duab peb sab isosceles muaj ob sab sib npaug thiab ob lub kaum sib npaug. Ob sab sib npaug feem ntau yog cim nrog kab me me nyob hauv nruab nrab ntawm kab ib sab, uas txhais tau tias ob lub kaum sib txawv ntawm kab yog tib qho kev ntsuas. Yog tias koj twb paub qhov loj me ntawm ib lub kaum sab xis, koj cia li paub lwm lub kaum sab xis. Nov yog lus piav qhia ntxiv:

Yog tias ib qho ntawm cov ces kaum sib luag yog 40 degrees, lwm qhov yog 40 degrees. Txoj kev ntawd koj tuaj yeem pom tag nrho peb lub kaum nrog qhov sib txawv ntawm qhov sib npaug ntawm 40+40 (piv txwv li 80) thiab 180, lossis ua lwm yam lus 180-80 = 100

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis 10
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis 10

Kauj Ruam 2. Nrhiav cov ces kaum ntawm daim duab peb sab

Ib daim duab peb sab muaj peb sab sib npaug thiab peb lub kaum sib npaug. Txhua sab feem ntau yog cim nrog ob kab luv nyob hauv nruab nrab. Txij li tag nrho peb lub kaum ntse ntse sib npaug, nws txhais tau tias txhua lub kaum sab xis ntsuas 60 degrees, vim 180/3 = 60.

Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 11
Nrhiav Lub Peb Hlis ntawm Ib Daim Duab Peb Hlis Kauj Ruam 11

Kauj Ruam 3. Nrhiav lub kaum peb hauv daim duab peb sab xis

Piv txwv tias koj tau txais daim duab peb sab xis, nrog ib qho ntawm lub kaum ntse ntse ntsuas 30 degrees. Txij li daim duab peb sab yog lub kaum sab xis, nws txhais tau tias ib qho ntawm cov ces kaum, uas yog lub kaum sab xis, yuav tsum ntsuas 90 degrees. Tom qab ntawd siv daim duab peb sab txoj cai, qhov sib txawv ntawm qhov sib npaug ntawm ob lub kaum (90+30 = 120) los ntawm 180, tom qab ntawd koj yuav tau txais 180-120 = 60 degrees.

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