As the below image suggests, a shape or object is said to be convex when it is curved outward, and to determine if a shape is convex, we can draw two points somewhere within the shape and see whether or not the line connecting them goes outside the shape. The below Convex Object diagram is created using EdrawMax Online as the free online graphic maker offers free templates and has over 26,000 symbols that ease down your efforts in creating geometrical diagrams. As the below convex object diagram suggests, a convex set or a convex region is a subset that intersects every line into a single line segment. For instance, a solid cube is a convex set, but anything hollow or has an indent.