A pentagonal pyramid side of base 25 mm and axis 55 mm long rests with its base on H.P. One of the edges of its base is perpendicular to V.P. It is cut by a section plane perpendicular to H.P., inclined at 40 degree to V.P. and passing through the pyramid at a distance of 7 mm from its axis. Draw the sectional front view and the true shape of section.
Explanation
The section plane is drawn perpendicular to HP and inclined at 40° to VP. The intersection of this section plane with the front view of the pyramid gives the sectional front view. The true shape of the section is obtained by passing the section plane through the pyramid at a distance of 7 mm from its axis.
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