รูปหลายเหลี่ยมเว้า | [rūplāilīem wao] (n, exp) EN: concave polygon FR: polygone concave |
concave polygon | (n) a polygon such that there is a straight line that cuts it in four or more points, Ant. convex polygon |
凹多角形 | [おうたかくけい, outakakukei] (n) (See 凸多角形) concave polygon [Add to Longdo] |