Question

a pantagonal plte of side 50mm, has a central equilateral triangular hole of 40mm side, with a side of plate and that of the triangle parallel to each other. the plate is kept on HP on this side being inclined at 30 degree to VP if the highest point of plate is 35mm above the HP,determine the angle of inclination with HP. project the triangular hole in all the view.​

Answer 1

Answer:

Problem 8 Asquare lamina of 40mm side rests on one of its sides on HP. The lamina makes 30° to HP and the side

on which it rests makes 45° to VP. Draw its projections.

Solution

VP a' (d') (c') b' a' (d')

X HP Y

fd d

c

c

q

I

L a b a b

c

._- a

Problem 9 Asquare plate of 30mm sides rests on HP such that one of the diagonals is inclined at 30Dto HP and 45°