Copyright Goodheart-Willcox Co., Inc. 292 AutoCAD and Its Applications—Advanced Coloring Edges To change the color of an edge, use the [Ctrl] key to select the edge. Next, open the Properties palette. In the General category, pick the drop-down list for the Color property. Base point A B C D Base point Base point A B Face is triangulated Plane of face changes Face changes shape Face changes shape Figure 11-26. The differences in opposite end and midpoint scaling of an edge. A—The original object. B—The edge is scaled down with a base point on the left corner. C—The edge is scaled down to the same scale factor, but the base point is on the right corner. D—The edge is scaled down to the same scale factor with the base point at the middle of the edge. Figure 11-27. Scaling the front edge with the base point at the middle of the edge. The original object is shown in Figure 11-26A. A—If the [Ctrl] key is not pressed, the edge is scaled and the shape and planes of adjacent faces are changed. B—If the [Ctrl] key is pressed twice, the edge is scaled, as are edges attached to it. If the scaling causes faces to become nonplanar, the adjacent faces may be triangulated.