Polygons can be merged together to form complex shapes. Open polygons and closed polygons cannot be merged together; they can only be joined to other polygons of the same type. Open polygons will be joined to other open polygons only if they have a common end point. Closed polygon shapes can be merged with other closed polygons. The result may not be a single polygon as the merged shape will take into account which polygons are solid and which represent holes in the shape. However, no distinction is made between different materials and so any resulting solid polygons will be allocated a single material.

To merge a number of polygons

§    Select the polygons to be merged together.

§    Choose Merge Polygon from the Shape menu.

The selected shapes will be merged together to form a number of other polygons.