Projections of a solid with the axis perpendicular to VP

When a  solid is placed with its axis perpendicular to VP, the base of the solid will always be perpendicular to HP and parallel to VP.  Hence in the front view, base will be projected in true shape. Therefore, when the axis of the solid is perpendicular to VP, the front view is drawn first and then the top and side views are drawn from it. When a  cylinder rests on HP with its axis perpendicular to VP, one of its generators will be on HP.
Figure 13 shows the Front view and Top view of a cylinder and cone resting on HP with their axes perpendicular to VP. In this case one of the points on the circumference of the base will be on XY.

 

Figure 13 shows the Front view and Top view of a cylinder and cone

Prism may be placed with their axis perpendicular to VP in three different positions.  The different positions are shown in figure 14.

Figure 14. Projections of a pentagonal prism resting on HP and axis perpendicular to VPwith different positions.