Autodesk 00308-011408-9F30A User Guide - Page 306

Creating a Polygon from the Intersection of Two Polygons On the Edit menu, click Trim, Intersection to create a new polygon from the intersection of two polygons in your drawing. The new polygon assumes the shape of the parts of the original polygons that overlap. The new entity has the graphic properties of the second polygon you click on. The original polygons are removed by this procedure. If you want to keep the original polygons, make a copy before you begin this procedure. To create a polygon from the intersection of two polygons 1 On the Edit menu, click Trim, Intersection, or click the Intersection button on the All-In-One toolbar. 2 Click the first polygon. 3 Click the second polygon. Subtracting One Polygon From Another On the Edit menu, click Trim, Difference to create a new polygon by subtracting an intersecting polygon from another. The new polygon assumes the shape of the second polygon, with the first polygon removed. The new entity has the graphic properties of the second polygon you click on. One application of this command is to make a polygon with a hole in it. The first polygon you click defines the shape of the hole. It must be located entirely inside the larger polygon for the operation to result in a polygon with a hole. The original polygons are removed by this procedure. If you want to keep the original polygons, make a copy before you begin this procedure. 296 | Chapter 23 Trimming Entities