Cov txheej txheem:

Yuav ua li cas koj nrhiav tau tus kab pheeb ces kaum ntawm txoj cai kaum sab xis?
Yuav ua li cas koj nrhiav tau tus kab pheeb ces kaum ntawm txoj cai kaum sab xis?

Video: Yuav ua li cas koj nrhiav tau tus kab pheeb ces kaum ntawm txoj cai kaum sab xis?

Video: Yuav ua li cas koj nrhiav tau tus kab pheeb ces kaum ntawm txoj cai kaum sab xis?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
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Nrhiav qhov ntev ntawm lub kab pheeb ces kaum (orhypotenuse) ntawm a txoj cai daim duab peb sab , hloov qhov ntev ntawm ob sab perpendicular rau hauv cov qauv a2 +b2 = c2, qhov twg a thiab b yog qhov ntev ntawm sab perpendicular thiab c yog qhov ntev ntawm lub hypotenuse.

Xav txog qhov no, koj ua li cas xam tus kab pheeb ces kaum?

Yuav nrhiav tau kab pheeb ces kaum ntawm ib daim duab plaub, koj tuaj yeem faib cov duab plaub rau hauv ob daim duab peb sab, piv txwv li, daim duab peb sab nrog ib lub kaum ntawm 90 °. Txhua daim duab peb sab yuav muaj ob sab ntawm qhov ntev l thiab w thiab ib qho hypotenuse ntawm qhov ntev d.

Tsis tas li ntawd, lub diagonal ntawm daim duab peb sab yog dab tsi? Hauv lwm lo lus, lub ntsiab lus uas cov kab pheeb ces kaum sib tshuam (hla), faib txhua kab pheeb ces kaum ua ob qhov sib npaug. Txhua kab pheeb ces kaum faib cov duab plaub rau hauv ob qho tib si txoj cai daim duab peb sab . Vim lub daim duab peb sab yog congruent, lawv muaj tib cheeb tsam, thiab txhua daim duab peb sab muaj ib nrab ntawm thaj tsam ntawm daim duab plaub.

Ntawm no, ua li cas koj pom cov kaum sab xis ntawm daim duab peb sab?

Ntsiab Cai

  1. Lub Pythagorean Theorem, a2 + b2 = c2, a 2 + b 2 = c 2, yog siv los nrhiav qhov ntev ntawm ib sab ntawm daim duab peb sab.
  2. Nyob rau hauv daim duab peb sab txoj cai, ib lub kaum sab xis muaj tus nqi ntawm 90degrees.
  3. Qhov ntev tshaj plaws ntawm daim duab peb sab yog hu ua lub hypotenuse, thiab nws yog sab uas yog opposite lub kaum sab xis 90 degree.

Dab tsi yog kab pheeb ces kaum thiab piv txwv?

Lub ntsiab txhais ntawm kab pheeb ces kaum yog ib yam dab tsi withslanted kab los yog ib txoj kab uas txuas ib ces kaum nrog rau cornerfurthest deb. Ib piv txwv ntawm kab pheeb ces kaum yog ib txoj kab mus los ntawm lub kaum sab laug hauv qab ntawm ib lub xwmfab mus rau sab xis saum toj kawg nkaus. YourDictionary txhais thiab kev siv piv txwv.

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