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Technical Drawing - Exam Papers - Higher - 2007 - BuildingQuestion 2Fig. 2 shows the outline plan and elevation of roof surfaces. (a) Surfaces A and C have pitches of 40° and 50° respectively. (b) Surface B has a pitch of 45°. (c) The dihedral angle between the surfaces A and D is 120°. (d) The dihedral angle between the surfaces E and F is 140°. Scale 1 : 100
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