Copyright Goodheart-Willcox Co., Inc. Chapter 11 Subobject Editing 285 First, select the EXTRUDE command. At the “select objects” prompt, press the [Ctrl] key and pick the face subobject to be extruded. Next, since this is a reduced trunk, specify a taper angle. Enter the Taper angle option and specify the angle. In this case, a 15° angle is used. Finally, specify the extrusion height. The height of the reducer is 12″. See Figure 11-19B. A face is selected Pick to select a color Select a material Figure 11-18. Changing the color of a face or the material assigned to it. Select this subobject to extrude C A B Select this subobject to extrude New solid New solid Figure 11-19. A—A new, reduced trunk needs to be created on the left end of the HVAC assembly. The face shown in color will be extruded. B—The Taper angle option of the EXTRUDE command is used to create the reducer. The face shown in color is extruded to create the extension. C—The EXTRUDE command is used to create an extension from the reducer.