Technical Drawing - Exam Papers - Higher - 1998 - Building

Question 2

Fig. 2 Shows the outline plan and elevation of roof surfaces and a dormer window. The surface B has a pitch of 40°. The true shape of the dormer surface F is an equilateral triangle. The dihedral angle between the surfaces A and B is 145° and the dihedral angle between the surfaces C and D is 150°. Draw the given plan and elevation and find the dihedral angle between the surfaces B and E.

Scale 1: 100