Koj ua pov thawj li cas cov kab yog sib npaug hauv cov ntawv pov thawj?
Koj ua pov thawj li cas cov kab yog sib npaug hauv cov ntawv pov thawj?

Video: Koj ua pov thawj li cas cov kab yog sib npaug hauv cov ntawv pov thawj?

Video: Koj ua pov thawj li cas cov kab yog sib npaug hauv cov ntawv pov thawj?
Video: Koj pom Los xyov koj pua paub 2024, Kaum ib hlis
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Thawj yog yog tias cov ces kaum sib raug, cov ces kaum uas nyob rau tib lub ces kaum ntawm txhua qhov kev sib tshuam, sib npaug, ces cov kab yog parallel . Qhov thib ob yog yog tias cov ces kaum sab hauv, cov ces kaum uas nyob rau sab nraud ntawm lub transversal thiab sab hauv. kab sib npaug , yog sib npaug, ces tus kab yog parallel.

Kuj paub, dab tsi theorem proves tias ob kab yog parallel?

Yog ob kab yog txiav los ntawm ib tug transversal thiab cov ces kaum sab nrauv yog sib npaug, ces tus ob kab yog parallel . Lub kaum sab xis tuaj yeem sib npaug lossis sib npaug; koj tuaj yeem hloov lo lus "sib npaug" hauv ob qho tib si theorems nrog "kev sib haum xeeb" yam tsis muaj kev cuam tshuam cov theorem . Yog li yog tias ∠B thiab ∠L yog sib npaug (lossis congruent), lub kab yog parallel.

Ib yam li ntawd, koj puas tuaj yeem ua pov thawj tias kab P thiab Q yog sib npaug? Yog tias muaj, qhia cov postulate lossis theorem koj yuav siv. Yog tias kab yog txiav los ntawm ib tug transversal thiaj li hais tias (lwm sab hauv, alternate sab nrauv, coj) lub kaum sab xis yog congruent, ces tus kab yog thaum uas tig mus.

Ib sab ntawm qhov no, koj ua li cas ua pov thawj ob kab sib npaug tsis muaj kaum?

Yog ob kab muaj ib tug transversal uas tsim lwm sab hauv lub kaum sab xis uas yog congruent, ces tus ob kab yog parallel . Yog ob kab muaj ib tug transversal uas cov ntaub ntawv sib raug lub kaum sab xis uas yog congruent, ces tus ob kab yog parallel.

Puas yog cov kab sib txuas sib txuas?

Yog ob kab sib npaug yog txiav los ntawm ib tug transversal, alternate sab hauv ces kaum yog kev sib haum xeeb . Yog ob kab yog txiav los ntawm ib tug transversal thiab alternate sab hauv cov ces kaum yog kev sib haum xeeb , cov kab yog parallel.

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