1. 凸多边形：convex 凸 | convex polygon 凸多边形 | convexity 凸性

2. 凸面多角形：convert...into... 把...转换成 | convex polygon 凸面多角形 | cope with 与..

3. 凸包：凸序:Convex order | 凸包:Convex Polygon | 凸壳:Convex Hull

4. 凸多边形 凸多角形：■ convex hull 凸壳 凸包 | ■ convex polygon 凸多边形 凸多角形 | ■ convex set 凸集合 凸集合

noun

1. a polygon such that no side extended cuts any other side or vertex
it can be cut by a straight line in at most two points