ConvexHullRegion

ConvexHullRegion[{p1,p2,…}] gives the convex hull from the points p1, p2, ….

ConvexHullRegion[reg] gives the convex hull of the region reg.

Examples

ConvexHullRegion[{{0,0}, {1,0}, {0,1}, {1,1}, {0.5,0.5}}]
(* Polygon[{{0,0}, {1,0}, {1,1}, {0,1}}] *)

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