Technical Drawing - Exam Papers - Higher - 1999 - Building
Fig. 2 shows the outline plan and elevation of roof surfaces and a dormer window. Surface E has a pitch of 35° The true shape of the surface A is an equilateral triangle having sides 14m long. The dihedral angle between the surfaces B and C is 130°, and the dihedral angle between the surfaces F and G is 140°.
(a) Draw the given plan and elevation.
(b) Determine the dihedral angle between the surfaces D and E.
Scale 1 :200