Puas yog cov kaum sab nrauv sab nrauv?

Cov txheej txheem:

Puas yog cov kaum sab nrauv sab nrauv?
Puas yog cov kaum sab nrauv sab nrauv?

Video: Puas yog cov kaum sab nrauv sab nrauv?

Video: Puas yog cov kaum sab nrauv sab nrauv?
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Anonim

Ob lub ces kaum uas sab nrauv rau cov kab sib txuas thiab ntawm tib sab ntawm txoj kab hloov pauv yog hu ua tib lub kaum sab nrauv sab nrauv. Lub theorem hais tias tib-sab sab nrauv cov ces kaum yog ntxiv, txhais tau tias lawv muaj qhov sib npaug ntawm 180 degrees.

Puas yog tib sab sab nrauv cov ces kaum congruent?

Txij li kev hloov sab hauv thiab cov kaum sab nrauv sab nrauv yog sib koom ua kethiab txij li cov kab ntawm cov kaum sab xis yog ntxiv, tib lub kaum sab xis yog ntxiv.

Dab tsi yog qhov txawv ntawm tib sab sab hauv thiab tib sab sab nrauv lub kaum sab xis?

Tib sab sab hauv cov ces kaum yog cov kaum sab hauv cov kab sib txuas ntawm tib sab ntawm txoj kab sib txuas thiab tib sab sab nrauv cov ces kaum yog cov kaum sab nraud ntawm cov kab sib txuas ntawm tib sab ntawm txoj kab hla.

Puas yog cov sab sab hauv thiab sab nrauv ntxiv?

Thaum ib qho kev sib tshuam sib tshuam ob kab, ob kab yog sib npaug yog tias thiab tsuas yog cov ces kaum sab hauv ntawm tib sab ntawm lub transversal thiab sab nrauv ntawm tib sab ntawm kev hloov pauv yog ntxiv (sum to 180°).

ob lub ces kaum sib npaug 180 hu ua dab tsi?

Cov kaum sab xis ntxiv yog ob lub kaum sab xis nrog cov lej ntawm 18 0 ∘ 180 ^\circ 180∘. Ib qho xwm txheej yog thaum lawv pw ntawm tib sab ntawm txoj kab ncaj nraim.

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