Fig. 290. - The Pattern for a Pedestal of which the Plan is an Equilateral Triangle.

Let A B D C in Fig. 290 be the elevation of a pedestal or other article of which the plan is an equilateral triangle, as shown by F E G. This elevation should be drawn so as to show one side in profile and the plan placed to correspond with it. Draw the miter lines E O and G O. Divide the profile B D into spaces of convenient size in the usual manner, and number them as shown in the diagram. From the points thus obtained drop lines, cutting E O and G O, as shown. Lay off the stretchout N P at right angles to the side E G, and through the points in it draw measuring lines. Place the T-square at right angles to E G, and, bringing it successively against the points in the miter lines E O and G O, cut the corresponding measuring lines. A line traced through these points will be the pattern, as shown by H L M K.

The principle involved in this and several following problems is exactly the same as that of the preceding regular and irregular shaped panels. In this case the shape of the article is shown in plan instead of elevation, and the profile is too large to permit of its being drawn within the plan, as were the profiles of the panel moldings in their elevations.