2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
cov ces kaum uas nyob ib sab yog ob lub ces kaum uas muaj ib qho vertex thiab ib sab tab sis tsis sib tshooj. Hauv daim duab, ∠1 thiab ∠2 yog cov kaum sab xis. Lawv sib koom tib lub vertex thiab tib yam sab.
Lub kaum twg nyob ib sab?
Yog ob lub ces kaum sib koom ib sab thiab ob qho tib si muab los ntawm tib lub ces kaum (vertex) taw tes, ces lawv yog cov ces kaum nyob ib sab. Nws yog ib qho tseem ceeb kom nco ntsoov tias cov ces kaum uas nyob ib sab yuav tsum muaj ob qho tib si sab thiab cov vertex.
Koj pom cov ces kaum nyob ib sab li cas?
Adjacent Supplementary Angles
Ob lub ces kaum tau hais tias yog cov kaum sab xis ntxiv yog tias qhov sib npaug ntawm ob lub kaum sab xis yog 180 degrees. Yog tias ob lub kaum sab xis ntxiv nyob ib sab, lawv hu ua linear khub. 180 o.
Tus piv txwv ntawm lub kaum sab xis yog dab tsi?
cov ces kaum uas nyob ib sab yog cov ces kaum nrog ib sab caj npab (sab) thiab ib qho vertex. Lub kaum sab xis yog tsim los ntawm ob lub rays sib ntsib ntawm ib qho kawg. Piv txwv li, ob lub ncuav pizza ib sab ntawm ib sab hauv lub thawv pizza tsim ib khub ntawm cov ces kaum uas nyob ib sab thaum peb taug qab lawv sab.
Puas yog 2 thiab 3 lub kaum sab xis?
Lub kaum twg nyob ib sab? Teb: D yog cov lus teb yog vim ∠2 thiab ∠3 sib koom ib sab thiab ib qho vertex, uas yog ob qhov tsim nyog ntawm cov ces kaum uas nyob ib sab.
Pom zoo:
Puas yog kab pheeb ces kaum txiav lub kaum sab xis ib nrab?
Txhua kab pheeb ces kaum faib ib lub ces kaum mus rau ob lub ces kaum. Nco ntsoov tias cov kab pheeb ces kaum sib npaug thiab txiav ib nrab ntawm cov ces kaum sab xis. Puas diagonal bisect an angle? kab pheeb ces kaum bisect the angles.
Ntawm qhov twg ntawm cov ces kaum hauv qab no yog cov haujlwm cosecant tsis tau txhais?
Qhov tseeb, tus nqi xa rov qab los ntawm kev ua haujlwm cosecant rau lub kaum sab xis ntawm xoom degrees lossis ib puas yim caum degrees yog suav tias yog tsis tau txhais, txij li qhov sib npaug csc (θ)= 1 / sin θ ) yuav suav nrog kev faib los ntawm xoom.
Ntawm twg ntawm cov ces kaum hauv qab no yog cov haujlwm secant tsis tau txhais?
Qhov tseeb, tus nqi xa rov qab los ntawm kev ua haujlwm secant rau ib lub kaum sab xis ntawm cuaj caum degrees lossis ob puas thiab xya caum degrees yog suav tias yog tsis tau txhais, txij li qhov sib npaug sec (θ)= 1 / cos θ ) yuav suav nrog kev faib los ntawm xoom.
Cov kaum sab nrauv sab nrauv nyob qhov twg?
Ob lub ces kaum uas yog sab nrauv rau cov kab sib dhos thiab ntawm tib sab ntawm txoj kab hloov pauv txoj kab transversal Kab nyob hauv geometry, transversal yog ib txoj kab uas hla ob kab hauv tib lub dav hlau ntawm ob qhov sib txawv point.
Qhov twg yog sab qab teb sab hnub tuaj lossis sab qab teb sab hnub tuaj?
Yog kuv tsis yuam kev, "sab qab teb-sab hnub tuaj" yog li nws sau ua lus Askiv, whereas "southeast" yog daim ntawv hauv American English. Puas yog sab qab teb ib lo lus lossis ob? (abbreviation S.E.) kev taw qhia ntawm sab qab teb thiab sab hnub tuaj, los yog ib feem ntawm ib cheeb tsam los yog lub teb chaws nyob rau hauv qhov kev taw qhia:
