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Technical Drawing  Exam Papers  Higher  1998  Paper 1Question 1Given the horizontal and vertical projections of two planes ABC and ADE. A = 290  5  140 (a) Determine the line of intersection between the planes. (b) Determine the dihedral angle between the planes. (c) Show the projections of a straight line drawn from B to the line DE and which shall be 85 mm long. (d) On a separate diagram, draw the projections of the skew lines AD and BC and show the projections of the shortest horizontal distance between them. 


