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.
