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Video: Puas yog cov kab sib txuas ua pov thawj cov kab sib txuas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thawj yog tias cov cov ces kaum sib raug , cov lub kaum sab xis uas nyob rau tib lub ces kaum ntawm txhua qhov kev sib tshuam, sib npaug, ces tus kab yog thaum uas tig mus . Qhov thib ob yog yog tias tus hloov sab hauv cov ces kaum , cov lub kaum sab xis uas yog nyob opposite sab ntawm transversal thiab sab hauv kab sib npaug , yog sib npaug, ces tus kab yog thaum uas tig mus.
Ntxiv mus, dab tsi theorem proves tias ob kab yog parallel?
Yog ob kab yog txiav los ntawm ib tug transversal thiab alternate sab nrauv ces kaum 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, cov kab sib txuas puas sib haum? Yog ob kab sib npaug yog txiav los ntawm ib tug transversal, cov ces kaum sib raug kev sib haum xeeb . Yog ob kab yog txiav los ntawm ib tug transversal thiab cov ces kaum sib raug kev sib haum xeeb , cov kab yog parallel . Sab hauv Angles ntawm Tib Sab ntawm Transversal: Lub npe yog ib qho kev piav qhia ntawm "qhov chaw" ntawm cov ces kaum no.
Kuj paub, tsib txoj hauv kev los ua pov thawj ob kab yog dab tsi?
Cov ntsiab lus hauv cov teeb no (6)
- #1. yog cov ces kaum sib thooj.
- #2. yog alternate interior angles congruent.
- #3. yog sib law liag, los yog tib sab, cov ces kaum sab hauv yog supplementary.
- #4. yog hais tias ob kab yog parallel rau tib kab.
- #5. yog tias ob kab yog perpendicular rau tib kab.
- #6. yog alternate sab nrauv ces kaum congruent.
Koj ua pov thawj thaum sib piv li cas?
Thawj yog yog tias cov ces kaum sib thooj, cov ces kaum uas nyob rau tib lub ces kaum ntawm txhua qhov kev sib tshuam, sib npaug, ces cov kab yog thaum uas tig mus . 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. thaum uas tig mus kab, sib npaug, ces kab yog thaum uas tig mus.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
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Koj ua pov thawj li cas cov kab yog sib npaug hauv cov ntawv pov thawj?
Thawj yog yog tias cov ces kaum sib thooj, cov ces kaum uas nyob rau tib lub ces kaum ntawm txhua qhov kev sib tshuam, sib npaug, ces cov kab sib npaug. Qhov thib ob yog yog tias qhov sib txawv sab hauv lub kaum sab xis, cov ces kaum uas nyob rau sab nraud ntawm lub transversal thiab sab hauv cov kab sib npaug, sib npaug, ces cov kab sib npaug
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