Hauv geometry, lub pentagon (los ntawm Greek πέντε pente lub ntsiab lus tsib thiab γωνία gonia lub ntsiab lus lub kaum) yog ib qho tsib-sided polygon lossis 5-gon. Cov lej ntawm cov kaum sab hauv hauv ib qho yooj yim pentagon yog 540 °. Lub pentagon tej zaum yuav yooj yim los yog kev sib tshuam ntawm tus kheej. Ib tus kheej-kev sib tshuam tsis tu ncua pentagon (los yog lub hnub qub pentagon) hu ua pentagram.
Pentagon muaj pes tsawg sab?
Teb- Lub Pentagon muaj 5 (tsib) sab. Lub pentagon yog tsib-sided polygon tseem hu ua 5-gon hauv geometry. 540 ° yog cov lej ntawm cov kaum sab hauv ntawm lub pentagon yooj yim. Lub pentagon ntawm tus kheej sib tshuam yog hu ua pentagram.
hom pentagons yog dab tsi?
Type of Pentagons
- Txoj cai lossis sib npaug pentagon: tsib sab sib npaug thiab kaum.
- Irregular pentagon: tsib sab tsis sib xws thiab cov kaum tsis sib xws.
- Convex pentagon: tsis muaj lub kaum sab hauv tuaj yeem siab dua 180 degrees.
- Concave pentagon: muaj lub kaum sab hauv siab dua 180 degrees ua rau ob sab "ntoo hauv" zoo li "qhov tsua"
Pab 2 lub pentagons muaj pes tsawg?
' Lub pentagon yog kaw, tiaj tus, daim duab ob sab uas muaj tsib sabthiab tsib lub kaum.
Puas yog 5 sab zoo li lub pentagon?
In geometry, a pentagon (los ntawm Greek πέντε pente lub ntsiab lus tsib thiab γωνία gonia lub ntsiab lus lub kaum sab xis) yog tsib-sided polygon lossis 5-gon. Cov lej ntawm cov kaum sab hauv hauv ib qho yooj yim pentagon yog 540 °. Ib tug pentagon yuavua tau yooj yim los yog tus kheej sib tshuam. Ib tus kheej-kev sib tshuam tsis tu ncua pentagon (los yog lub hnub qub pentagon) hu ua pentagram.
