Textbook of Engineering Drawing, Second Edition

____ Projection of Solids 6.19

Fig. 6.26

Problem: A pentagonal pyramid of base 30mm side and axis 50mm long has its apex in v.p

and the axis perpendicular to v.P. a corner of the base is resting on the ground and the side

of the base contained by the corner is inclined at 300 to the ground. Draw its projections.

Construction (Fig.6.27)

X---a--t-~--~~-- ~

o ..,

Fig. 6.27

1. Draw the front view of the pyramid which is a pentagon of side 30mm, keeping one of its
   comers on xy and an edge from that comer inclined at 30° with xy.


2. Obtain the top view by projection keeping the axis length equal to 50mm and the apex 0
   lying on xy.