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Video: Yuav ua li cas koj tsim ib daim qauv ntawm lub kaum sab xis nrog lub compass?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15
Yuav Ua Li Cas Luam Ib Lub Taub Hau Siv Lub Compass
- Kos ib kab ua haujlwm, l, nrog point B rau nws.
- Qhib koj compass rau ib lub vojvoog r, thiab tsim arc (A, r) sib tshuam ntawm ob sab ntawm lub kaum sab xis A ntawm cov ntsiab lus Sand T.
- Tsim arc (B, r) sib tshuam kab l ntawm somepointV.
- Tsim arc (S, ST).
- Tsim arc (V, ST) intersecting arc (B, r) atpointW.
Tsis tas li ntawd, koj yuav tsim lub kaum sab xis nrog lub compass li cas?
Tsim lub kaum sab xis 90º
- Kauj Ruam 1: Kos caj npab PA.
- Kauj Ruam 2: Muab qhov taw tes ntawm lub compass ntawm P thiab kos ib qho arcthatcuts caj npab ntawm Q.
- Kauj Ruam 3: Muab lub ntsiab lus ntawm lub compass ntawm Q thiab kos ib qho arcofradius PQ uas txiav cov arc kos hauv Kauj Ruam 2 ntawm R.
Ib yam li ntawd, koj ua li cas luam ib kab kab nrog lub compass? Pib nrog ib kab ntu PQ yog peb yuav luam . Kos ib point R uas yuav yog ib qho kawg ntawm qhov tshiab kab ntu . Teeb lub compasses ' point on thepoint Pof the kab ntu ua luam . Kho compasses ' dav rau qhov taw tes Q. The compasses 'widthis tam sim no sib npaug rau qhov ntev ntawm qhov kab kab PQ.
Yog li ntawd, koj yuav luam ib daim duab peb sab nrog lub compass li cas?
Thaum koj luam daim duab peb sab , lub tswv yim yog siv koj compass kom " ntsuas" qhov ntev ntawm peb sab ntawm qhov muab daim duab peb sab thiab ces makeanother daim duab peb sab nrog sab congruent rau sab ntawm theoriginal daim duab peb sab.
Lub kaum sab xis 60 degree hu li cas?
Ib lub kaum sab xis nws qhov ntsuas yog ntau tshaj 0 ° tab sis tsis tshaj 90 ° yog hu ua tus mob lub kaum sab xis . Lub kaum sab xis muaj magnitude 30 °, 40 °, 60 ° yog txhua yam mob lub kaum sab xis.
Pom zoo:
Cov kab lus hloov sab hauv cov ces kaum piav qhia txoj haujlwm ntawm ob lub kaum sab xis li cas?
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Koj tuaj yeem ua pov thawj li cas 2 daim duab peb sab zoo sib xws siv lub kaum sab xis sab SAS zoo sib xws postulate?
SAS Similarity Theorem hais tias yog ob sab hauv ib daim duab peb sab yog proportional rau ob sab hauv lwm daim duab peb sab thiab lub kaum sab xis nyob rau hauv ob qho tib si congruent, ces ob daim duab peb sab zoo ib yam. Ib qho kev hloov pauv zoo sib xws yog ib lossis ntau qhov kev hloov pauv tsis tu ncua ua raws li kev dilation
Dab tsi yog kev sib raug zoo ntawm sab nrauv thiab sab hauv lub kaum sab xis ntawm daim duab peb sab?
Cov kaum sab hauv yog hu ua Sab hauv cov ces kaum. Cov lej ntawm cov kaum sab hauv ntawm daim duab peb sab yog ib txwm 180 degrees. Lub kaum sab nrauv yog lub kaum sab xis ntawm ib sab ntawm ib qho duab, thiab ib txoj kab txuas ntxiv los ntawm sab tom ntej. Qhov sib npaug ntawm lub kaum sab nrauv thiab nws lub kaum sab hauv uas nyob ib sab kuj yog 180 degrees
Yuav ua li cas koj tsim ib tug sib npaug daim duab peb sab nrog ib tug compass?
Muab koj lub ntsuas ntsuas rau ntawm A thiab ntsuas qhov deb mus rau taw tes B. Hla ib qho arc ntawm qhov loj me saum toj no (lossis hauv qab) ntu. 2. Yog tsis hloov lub ncua sij hawm ntawm lub compass, tso lub compass point ntawm B thiab viav vias tib arc, intersecting nrog thawj arc
Yuav ua li cas koj pom lub sab hauv ntawm lub kaum sab xis?
Yuav Ua Li Cas Nrhiav Sab Hauv Lub Kaum Qhov sum ntawm cov ces kaum hauv daim duab peb sab ib txwm sib npaug 180o. Squares muaj 4 qhov sib npaug sab thiab cov lej ntawm cov ces kaum ib txwm sib npaug 360o. Txhawm rau nrhiav qhov ntsuas ntawm cov ces kaum sab hauv hauv ib lub xwmfab, koj faib cov lej ntawm cov ces kaum (360o) los ntawm tus lej ntawm sab (4)