Ib qho yooj yim polygon uas tsis convex yog hu ua concave, non-convex los yog reentrant. Lub concave polygon yeej ib txwm muaj tsawg kawg ib lub kaum sab xis ntawm sab hauv-uas yog, lub kaum sab xis nrog qhov ntsuas ntawm 180 degrees thiab 360 degrees tshwj xeeb.
Nws yog concave polygon?
A Concave polygon yog ib lub polygon uas muaj tsawg kawg yog ib lub kaum sab hauv siab dua 180 degrees. Nws yuav tsum muaj tsawg kawg yog plaub sab. Cov duab ntawm lub concave polygon feem ntau yog tsis xwm yeem. Lub concave polygon yog ib tug polygon uas tsis convex.
Dab tsi yog concave polygon nrog piv txwv?
Ib tug polygon yog hais tias yuav concave yog tias tsawg kawg yog ib qho ntawm nws sab hauv lub kaum sab xis siab dua 180 °. Nyob rau hauv lwm yam lus, lub vertices ntawm ib tug concave polygon point inwards. Ib lub hnub qubyog ib qho piv txwv ntawm lub concave polygon.
Yuav ua li cas koj thiaj paub yog tias tus polygon yog concave?
Polygons nrog txhua lub kaum sab hauv tsawg dua 180 ° yog convex; yog tias ib lub polygon muaj tsawg kawg yog ib lub kaum sab hauv siab dua 180 °, nws yog concave. Yooj yim polygons tsis hla lawv sab; complex polygons muaj nws tus kheej-kev sib tshuam sab.
Dab tsi yog concave lossis convex polygon?
Convex and Concave Polygons
Txhua tus polygon yog convex los yog concave. Qhov sib txawv ntawm convex thiab concave polygons nyob rau hauv kev ntsuas ntawm lawv cov ces kaum. Txhawm rau kom lub polygon ua convex, tag nrho nws cov kaum sab hauv yuav tsum tsawg dua 180 degrees. Txwv tsis pub, lub polygon yog concave.
